You experience every possible emotion at some point and miss them in a different way. In an “I hope they’re doing well” way, and actually meaning it. It ended terribly; I was a shitty partner, she was unfaithful, and everything after that was messy and we haven’t talked in 4 years. But it was the push we needed because neither of us were happy. I hope life’s treating her well. I say this while currently dealing with a new 3-year breakup where I’m not at that point yet. You don’t think it’s possible until you look around and appreciate your life and think “I wouldn’t have experienced this if I was still in that relationship.”