I need to vent. Or advice anything .

My bf and me just had an argument because he went to the bathroom to pee and he forgot to wash his hands he comes out and I asked him and he said he did but he lied so then he's playing around about it and went to wash his hands but now I'm super anxious because I have OCD I hate germs, and idk how a grown man can forget . He said it's not that big of a deal because it was just pee but to my mind it's horrible. It makes it worse because he before he went my son went in there to poop so obviously the toilet has poop particles and germs and he obviously touched the toilet to pee I just feel so anxious and so bad right now and he's upset because I'm making a big deal about it . But it's so hard when you have ocd i feel like everything including him are just dirty and full of germs . I'm so upset at him right now. How can a grown person forget a simple hygiene task ugh