A partner who only calls when it suits him is showing you how he spends the flexibility he has, not always how much flexibility he actually has. The clock alone cannot tell you which one you are looking at. Run the Bidirectional-Convenience audit: separate the part of his timing that his schedule genuinely controls from the part he simply prefers, then check whether the flexing ever runs toward you or only ever away.
I am the man who calls when it is convenient. I run five businesses, and I have been the guy three time zones ahead who returned the call at the one hour that happened to fit my day, then told myself I was doing the best I could. So I am not guessing at what is on his side of the screen. I know both versions from the inside.
There is the version where the window is real. And there is the version where the window is just easier for me.
Those two look identical on your phone. They are not the same thing.
That is the whole trap of "only when convenient for him." The convenience is visible. The reason behind it is not. And you have spent weeks trying to read the reason off a timestamp, which is the one thing a timestamp can never hand you.
Start with what the clock can and cannot tell you
A call landing at 11 p.m. his time, or 6 a.m. yours, tells you exactly one fact. It tells you when he opened the line. It does not tell you why he waited, what he weighed against it, or whether he even noticed the hour was hard on you.
Your mind fills that silence with a story anyway. He does not think about my day. He fits me into the gaps. He calls when he is bored and hangs up when something better appears. Maybe. Or he is on a rotation that flips his waking hours, and the gap you resent is the only stretch he is conscious and free.
You cannot tell those apart from the outside. Neither can I, and I do this professionally.
What you can do is stop grading the hour and start grading the give. Not "when does he call," but "when I ask him to move, does anything move." That single shift takes you out of mind reading and into information you can actually act on.
The Bidirectional-Convenience audit
The audit is three tests. Each one strips a layer off the word "convenient" until you can see what is actually underneath it. You are not scoring his character. You are sorting a fixed constraint from a soft preference, and one-way effort from two-way effort.
Test one: constraint or choice
Ask for one specific window that works for you, and listen to the shape of his answer.
A real constraint answers with a counteroffer. "I can't do your mornings, my shift starts at five, but I am off every Thursday and Sunday night." That is someone handing you the map of what is fixed and where the doors are. A soft preference answers with reassurance and no plan. "I'll try, things are just crazy right now." One gives you a time. The other gives you a feeling. Only one of them can be scheduled against.
Test two: which direction the flex runs
Every long-distance call costs someone an awkward hour. The question is who keeps paying it.
If every call sits inside his comfortable window while you take the pre-dawn wake-up, the alarm on your lunch break, the Friday night you kept clear, the convenience is running one direction only. Bidirectional looks different. Sometimes he takes the bad hour. Sometimes he sets an alarm for your time zone instead of asking you to bend to his. The exact split does not have to be even. It does have to exist.
Test three: whether he protects time before it disappears
There is a difference between a man who calls into a gap and a man who holds a slot.
Calling into a gap means you hear from him when his day happens to clear. Holding a slot means he decides on Tuesday that Thursday at nine is yours, and then he defends it against the things that come up, the way he would defend a meeting he cannot miss. Anyone can call when nothing else is pulling at them. The tell is whether he ever reserves you before his life has a chance to fill the space.
When the constraint is real, and what that changes
Sometimes the window genuinely is not his to give.
Most people, though, have more give in their day than "only when convenient" suggests. The Bureau of Labor Statistics found that fifty-seven percent of wage and salary workers could vary the times they began and stopped working, while thirty-six percent had employers who set the schedule for them with no input. Sixteen percent usually worked a non-daytime shift. That is the honest spread. For a real slice of men, the clock truly is locked. For a larger slice, it bends, and "convenient" is a choice about where to spend the bend.
The locked cases are real and worth respecting. A man on nights, on a rotating roster, or five time zones ahead is not inventing his window. The CDC's occupational-health researchers describe circadian rhythms as internally driven cycles that rise and fall across the twenty-four-hour day, and sleep that is not timed to them is poor sleep. Someone working against his own body clock has a narrow band where he is actually awake, alert, and worth talking to. If that band keeps landing at a hard hour for you, that is a scheduling problem to solve together, not proof he does not care.
The audit still applies. A genuine constraint shows up in test one as a counteroffer and in test three as a protected slot. What it never does is explain away test two. Even a man on the most brutal roster can take the awkward hour sometimes instead of leaving it to you every time.
When convenient for him is just convenient for him
Now the harder version. The schedule bends, and it only ever bends your way.
This is the pattern where he could call before his gym session but calls after it, when he is drained. Where the "crazy week" that blocks a planned Thursday somehow leaves room for a spontaneous Saturday that suits him. Where every arrangement quietly reorganizes itself around his comfort, and yours is the flexibility being spent.
You do not need to prove he is doing it on purpose. Most men in this pattern are not scheming. They are simply optimizing their own day and have never once been asked to feel the cost you are absorbing. My team has thousands of conversations weekly, and the through-line is the same everywhere. Men keep taking the easier arrangement until someone makes the easier arrangement stop working. Not by punishing them. By being clear about what you will and will not build around.
A connection can be casual and still be fair. The problem is never that a schedule is tight. The problem is one person carrying the whole inconvenience while the other calls it "just how it is."
What to say instead of keeping score
Do not go quiet for four days to see if he notices. Do not answer every last-minute call at full brightness to prove you are easy. Both moves aim at a reaction instead of stating what works for you.
Say the visible thing and offer one route forward.
IF YOU WANT THE TIMING TO BECOME MUTUAL
I have noticed our calls keep landing on your schedule, and the hours are getting hard on my end. Can we set one recurring time each week that actually works for both of us?
IF A SPECIFIC CALL DOES NOT WORK AND YOU WANT TO REDIRECT IT
Tonight is too late for me to be any good on the phone. I am free Thursday at nine my time. Want to make that our call?
IF YOU NEED TO NAME THE STANDBY DIRECTLY
I want to talk to you, and I cannot keep my evenings open on the chance you are free. Give me a time you can protect and I will build around it.
None of these accuses him of not caring. Each names the pattern, states your availability, and hands him a clear way to show whether the convenience can run both directions.
How to read what he does next
There are four common outcomes, and his answer matters less than his behavior after it.
He protects a real slot and shows up to it. Good. Do not turn one kept call into a verdict on the whole relationship, but let it count, and watch whether protected time becomes the pattern instead of a one-time fix.
He offers a genuine constraint and a workable counteroffer. Decide whether the window he can actually give is enough for you. A fixed Thursday call from a man on nights may be worth more than scattered convenient calls from a man who will not commit to any of them. If the logistics are the real issue, planning calls around a busy schedule is a solvable problem.
He agrees warmly and nothing changes. "You're right, I'll be better" with no time attached is not a plan. Warmth without a protected slot leaves the arrangement exactly where it was, and now you have the data.
He treats the ask as pressure and keeps calling on his terms. Stop debating his intentions. The refusal to move is the answer. If the arrangement only ever works when you fit his life, that one-directional pattern is the thing to weigh, not the size of his workload.
You do not have to know why he only calls when it is convenient for him. You only have to know whether the convenience will ever move toward you.