One more thing if his penis was pushed against my bumhole when he came on it would that be considered exposure to air? Like pushed against the hole.
Zero chance of spreading it outside the anus because it is instantly inactivated in air. Only sex risks are unprotected anal or vaginal which you didn't have.
I think wat im tryin to say is like what is the risk if any if wen his penis was pushed against my anus unprotected if a tiny bit of the tip of his penis went inside
Also one more thing. So unless the penis fully penetrates the anus unprotected there is no risk?