Is it normal for me to love him so much I cry?

I was laying with my boyfriend and I just broke down and started crying. He's not my first boyfriend but I'm his first girlfriend and I always freak out thinking that nobody marries their first girlfriend. We have been dating for a long while now and we live together right now, I was holding his arm and I just started crying... a lot. He held me and didn't ask why I'm crying but he was just there for me... I think it made me cry more to be honest. Is it normal to just love him so much it makes me cry? I just don't ever want to be without him 😢