This would happen to me.
I love my boyfriend. I do, I love him fiercely and completely and I wish he would never leave me. But the second I'm settled and happy in a healthy, stable relationship, I meet a guy that I could very well see myself dating, and I kind of reconnecting with my big, dumb high school crush. This is nothing, it's not hard, and I don't have a choice to make. Cheating is never an option, and I will not break up with my guy for anything. The presence of temptation is just bothering me. =/