Conflicted Head Over Heart

I met this guy and we dated for almost a year, met his family, then we stop talking and he went on to dating other people and so did I. Almost 3 yes later we ran into each other and all of the emotions and not being able to let each other go despite the separation. He apologized and express that he shouldn't have let me go and that it was his biggest regrets. He stated that he has grown and a lot has changes for him. Same for me. When we ran into each other he was in the middle of a break up and I expressed to him that he if he loves her then don't hurt her or me. He explained that he doesn't love her and things were toxic with their relationship. A few months later he came to me and told me he has always loved me and they have gone their separate ways. He thought he would get a second chance to see me and he always wish he could. Now that we have been together for a year, I'm struggling with how things went the first time we were together and how things ended. I've notice that he's different and more mature than before, he's given me a key to his home, introduced me back to his family and asked me to move in. I love him and always have. Our friends and family have told me I private that he's always loved me and wants to build with me. Lately I've been given him a hard time because I'm guarded and fearful. My emotions are all over the place and I don't want to project my insecurities on him. So I've joined this group to freely speak and hopefully have a bit of support...Thanks for Reading ❤