I am still in love with my ex although I have a boyfriend

Hi good ppl. I have been in a relationship status for a month now. He is a good man trying his best to make me smile n happy. Always listening to me n have my back all the time. He is loving and our relationship is secure and safe. He is my best friend from two years. But from my side I don't have sparks or butterflies towards him and I'm not happy to be his woman. I'm not sexually attracted to him. And most of the time I'm not thinking of him. I'm thinking about my ex who I broke up 13 months ago . I saw him few weeks ago in my college. He came to say hi to me but I acted cold because I missed him deeply. He was my happiness, my peace of soul n mind. I never felt the way I felt to him. But we broke up because my family forced me to stop seeing him because if his religious beliefs.

Every time I'm feeling down I think of my ex and. The good memories we had to make my day better. I keep going to bed crying and I feel lonely without him.
Every time I see him around my heart get excited n happy. However I dated many men after we broke up and still couldn't feel or enjoy myself with them and even broke many men's heart because I couldn't develop feelings . Idk what to do w my current man. He truly loves me and introduced me to his family but I don't wanna marry him and I can't see myself w him in few years.
I'm not the type who wanna get married but I have been dreaming at.m night that we got back together n having a peaceful relationship again.