<human>: My boyfriend and I (20 M, 20 F) have been together for two years, being each other's firsts of everything and I honestly have never been happier. I feel so complete and at peace when we're together AND apart, that I'd imagine if we ever break up, I'd be devastated. I know everything is going well at the moment, and that we both try our best to resolve our differences, but at our age things can be quite volatile. I'm just really scared of the possibility of losing him (not expressed to anyone but myself and now, Reddit...). I know breakups happen, and I know I have NO reason to worry about it right now because everything is perfect, but the fear simmers at the back of my mind when I'm idle in bed, or in the shower, or what have you.

So I have a question for people in happy, long-term relationships, how do you cope with the idea of breaking up? It just seems so bleak and obsolete, that even with the best friends and family in the world (which I do have <3), it would be so difficult...

Can you give me a shortened version of the text?
<bot>: Scared of the possibility of the end of my relationship with the SO. Wondering how happy couples cope with the possibility of separation.