It was nothing personal, really. Eddie had been adopted by his own wizard. Sirius had explained a few things to him but not everything. He didn't know about the whole blood purity thing. He didn't know that Bill's family was often looked down upon or just flat out hated because they chose not to be blood purist assholes. This had nothing to do with that or even Bill's interest in Richie. While he was in this sort of mood it really was all about germs. About the creeping thoughts that never fully went away. Even stepping away was about germs.
"There are approximately 500 million germs in the human mouth." And the idea of someone he didn't know or particularly like sticking their tongue down his throat was horrifying and made him uncomfortable. There had been a very traumatizing experience with a leper shortly before his death that he still vividly remembered. The thoughts were fresher thanks to the doors and his trip back to Neibolt. Now that he was thinking about it there was a chance he wouldn't be kissing anyone for awhile.
Maybe it was a good thing he got jealous and put all other plans on hold. Who knew if he would actually be up for all that romance Richie had been promising him. Thinking about his boyfriend just made him frown that much more and being around Bill wasn't going to help. Maybe he just should've gone home with Stan. What did he need to think about anyway? He'd figure out the sleeping arrangements somehow. Maybe if he asked the wizard who'd adopted him he could spend the night on Sirius and Remus' couch though that felt unfair to Stan. "Look. I'm sure you're nice but I should go."