Why is he changing?

There is this guy that I have known for a few years now and we started off as friends with benefits and we still are we just don’t have sex as often. He is more focused on doing other things with me like he would rather take a walk or go out and do something somewhere instead of being in the bedroom. Last weekend I went out to eat with him and his kids and we had a bonfire at his house after that. He has been spending a lot of time with me lately too, more than he used to. Why do you think he’s changing from what he used to be to what he is now?
Why is he changing?
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