Simp

Is a guy, similar to a "White Knight," who will take on the blame for something done by the girl. Almost all of the time, the simp is not the boyfriend of the girl but just a guy stuck in the friend zone who thinks such a defense will work in his favor when she is deciding on taking in a boyfriend. Most of the time, the girl is using the guy for money, a car ride, etc. and has no problem having sex with a "bad boy," as the simp will find out. She will even tell Simp about the sex, and Simp will forgive her.

I thought Dane was dating Olivia, but it turns out he is just her Simp.