love certainty

I want to know if he really loves me, inside his heart and in real life, for the rest of his life. and I want to know if we finally will get married soon. Because, once in our relationship, I found out that he seemed doubt of me and he has other relationship with other girls, and he tried it hard to hide it from me. He said, he does not want to loose me again. He was afraid that I will leave him. We had gone to out separate ways once, because he never spoken the truth of his expectation about our relationship, and his feelings, of course. But the period of his betrayal is still hurting me inside. I learn and push hard myself to stand strong and decided to walk next to him until today.