Into the 2nd month after our breakup we would still hang out but it started to feel different. He was constantly on his phone texting and I found out he had been on a date. Not only this, but my girl friend who was using the same dating app as him told me he was constantly online, even into the odd hours of the night. When we dated he always wanted be in bed at the latest by midnight, but now he was always awake. I noticed this on Facebook too. I started to get bothered by how obsessed he seemed, so I finally confronted him through text that it made me feel like sh*t that he was not only talking to other girls but in a seemingly obsessive way, all the while acting like me and him were completely fine. He "read" my text and didn't reply. I texted him again the following day and said "if you got my text, I'm guessing you don't want to talk about it?" And he read that and didn't reply either.
Since then, its been a month and a half and he hasn't contacted me at all. It hurts to feel like I've totally lost a person whom I felt was one of my closest friends only 3 months ago. His birthday is coming up and I really want to talk to him. I miss him, and if anything, I would at least like closure that we aren't ever going to talk again (if thats what he wants). I don't know if I should try calling him or what, but I just want to relay to him that I've accepted that he and I are both changed, we are NOT going to get back together, and I really want to stay friends but if he doesn't its understandable. I guess I just want that "last talk"... What should I do?