My boyfriend has a lot going on atm and has started getting cold and distant. Is it over?

He's currently out of country, sorting a few things out. We still talk all the time and he initiates contact, but has stopped showing any affection towards me. I've addressed the issue and he doesn't seem like he wants to break things off. Just, that I should understand his situation. I'm returning his energy for now, but it feels weird. What should I do?
My boyfriend has a lot going on atm and has started getting cold and distant. Is it over?
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