Interim Boyfriend
An interim boyfriend is a man who becomes very close to a woman, but is not quite the dream boyfriend she has in mind. She may let her guard down and even begin to love you, but because of the dream man in her head, and the fact that you're not it, it just isn't going to happen. Be ready for a world of hurt when she finally finds her dream guy.
"After she met her dream man, I realized that I was only an interim boyfriend. I feel like a total tool for thinking this could go anywhere."