I love her but i don't know if i should be in a relationship

About a year ago, i met a woman that helped me open my hear to such beautiful experiences. We have connected so deeply and have grown alot together. We dated for about 7 months until i went to college. During that time, she slept with an ex-boyfriends twice and i kissed one of her friends, but all while we were not together. Even though we were not together, we both were upset with the actions we chose. WE have got back together twice again since i have returned from college but there seems to be something in the way.
We are very close friends now i keep thinking too much about our relationship and whether or not we should be together. I still love her and am very happy around her, but when i try to be with her i feel something between us. I don't know if i am trying to hold on and recreate what we used to have or i want to be with her because i love her and want to grow more. I am asking for guidance in trying to find out if i am holding on or not?