Can't sleep, tears in my eyes. My roommate of 2 years(college) who I considered to be my best friend has stopped talking to me

In short when I came back to campus on the 2nd August for my 5th semester, my roommate supposedly got in a relationship with a girl we are common friends with(she used to like me but I wasn't ready for a relationship). I never had problems with their relationship. My roomie confessed his relationship which they started on 19th June when we were at home telling me how sorry he feels, and all. I told him its alright and everything went back to normal.

Then I was back to my home for Rakshabandhan and when I came back, i realised that he has stopped talking to me. I am done with him, but it hurts, it really does. Our beds were joined, today I separated them and it felt like dagger in my heart. I really supported him in every way I could and only expected a warm smile but I think that was too much to ask from him.

I usually don't make friends but when I do, I give that 100 percent. I feel ditched, hurt and I wasted my 2 years on a horrible person.