We're better

We had a short talk about the incident and now we're better. He never did talk about what was bothering him; he doesn't want to keep rehashing it. He did acknowledge that he handled it poorly and should have given me an explanation. He said I was very beautiful and he would never want to hurt me. Fair enough. We had a lovely intimate time in which we talked about how much we loved each other and touched, tentatively, on the subject of marriage. Very scary. I love him sooo much, and he does me, but what if things go wrong? I couldn't take another relationship breakdown.