Please explain: Feelings?

I just wanted a few opinions and experiences from others that may clear up what Im feeling right now.

Last night my boyfriend explained some problems he had in the past. Including bad relationships where he wanted to end his life and family problems. I knew some of this because we had a rocky start including some trust issues but now everything is good. He was just really upset about it last night saying he doesnt want me to end up like his ex and leave him suddenly and how he loves me so much and the future he sees for us.

I felt fine before this but now Im feeling very overwhelmed. I wanted serious/ committed and I do love him a lot - but now it seems "real" instead of a honeymoon phase if sorts.

I love him a lot and any positive/ encouraging advice would be great!