😂why are men so weird

My ex and I have been separated for a little over two months now with zero contact.he was the one also who ended things with me over a silly misunderstanding in the first place. Well long story short he sent me a friend request randomly yesterday and now he's liking and commenting on my stuff. Why do people do this 😂🤷🏻‍♀️ a bit random and confusing I don't even know what to think because I'm trying to do me and be happy and boom! Here he comes