Okay. Say you're honestly, truly in love with someone, but then there was someone else. ?

Have you ever heard of the 80/20 rule? Basically, you're only ever going to get 80% of what you want in your partner. And while someone may come along that looks better than the one that you're with, if you leave the person you're with you'll more than likely wind up with 20% of what you wanted and with the 80% door shut forever. What I'm saying is don't leave the person you're with because someone else came along because you'll be happier where you're at in the end.