Pre-Wedding Jitters!??? (Long post)

So last night fiancé and I had a long talk about some things on our minds. We explained how we are both nervous and anxious as the day gets closer and closer. Well, he has been engaged before and a month into the engagement he left and told her it wasn't what he wanted. I didn't know that until a few months into us talking, which I was in a wow factor when I found out but I told him I had respect for him for being able to end it then and not after they got married. Well, with that happening in his past it does make me have some fears that he will do the same... granted we're this close to the wedding and he hasn't but the way he was talking last night it's like he is scared to get married and that makes me feel like he will just run at any given point! To top it off he asked me how I felt about him apologizing to his ex before we got married because he feels like how he went about it was wrong and that he was really (cont below)