She's not really a fall out boy fan, but she was listening to Sugar, We're Going Down when she noticed two things:

1. Watching you two from the closet like maybe as in gay?  this is kinda obvious, I don't know how I didn't notice it before honestly

2. We're always sleeping in and sleeping in for the wrong team batting for the wrong/other team = gay... So...

Definitely implies that Pete may not be exactly straight, hmm?