<human>: Could you distill the essence of the text into 1-3 sentences?

Brief background, girl is Catholic and I'm Muslim. Friends since high school and decided to date summer of last year. We're great friends and decided to see where it would go. She went abroad for a semester and we talked everyday for 5 months. 

We started getting really serious and some of our conversations started to consist of marriage and the future. She drinks I don't. She's Christian and I'm Muslim. I real liked this girl, but I couldn't make myself convert to Christianity. I contemplated it, but I felt I would be betraying my whole family for this girl. She's a great friend, one of my closest friends ever, and really special to me. We were causal that went to become serious. She broke it off because if we waited longer it would have been worse for us. We thought about a future together and how complicated it would be if we were different religions. 

She going to church alone, separating drinking life from home, and having kids be Christian or Muslim. We were cuddling after dinner and watched a movie together when she made the decision. It felt out of nowhere and now I'm at a loss and feel a lot of pain that I've never felt before. I feel used and led on and I am wondering if I will ever be the same and trust another person again.

 I want to be friends with her, but feel as though similar feelings will arise when we see each other again. I don't want to be ruthless and pretend she never existed or repress our memories together, although I feel as though I have to do that to move on. This is my first relationship, I'm torn and feel blindsided. Any advice?
<bot>: Friends since high school. Casual relationship turned serious. Broke up due to religious barrier. First relationship, seeking advice.