He got a boner because he wanted to bone her.

Girls are crazy, but as long as you are open with them, they are not complicated what so ever. I'm more complicated than my new girlfriend. She gets pissed at me because I can get in a shitty mood for no good reason, just woke up on the wrong side of the bed sort of thing. She knows its just me though, and it comes with the territory.

I'm half mentally insane.