Rim Job?

Just wanted to reach out for some opinions about something.

The other night i hooked up with a chick and she super horny for sucking a cock. I obviously obliged and let her go to town. While she was blowing my she paused and asked me if i wanted her to eat my ass?? all i said was no just keep sucking which she did and a couple minutes later blew my load in her mouth and she swallowed every last drop. my question to anyone reading this is, is that normal? should i have said yes? if i say yes does that make me gay? i dunno it caught me off guard. How does everyone else feel about it?

Thanks,