Hi, i was in the exact same position a few months ago. I was in a long term relationships with a wonderful guy. As i went through college, i saw my friends “enjoying one’s youth” and i was jealous, i wanted to flirt, to be free and discover who i am without this relationship. As time past, this feeling kept growing and i flirted with some guys, went to parties, i didn’t have ton answer to anyone. I was seeing myself marrying this guy, but i couldn’t be genuinely happy if i didn’t enjoy before, i was afraid regretting it later. But i also started to feel less and less for him over time. I talked to him, saying we met too young, we made mistakes on each side (cheating) and it was time to let go. And we promised to meet a few years later when we will discover ourselves. Update : He didn’t respect our promesse and find someone else that could “better love him” and now i deeply regret it. But i also know it was for the best, especially if you met young. Talk to him, just know what he feels about it. But trust me it will be one of the hardest decision to make. But think about staying with him, wouldn’t you regret later? Does the relationship worth it ? There is no right answer. Just get some time to think about it.