Unless noxious, deadly fumes were expunged from his rectum there's really no reason for you to be running for the hills. Especially after sleeping with him on the first date. However, there is something to be said about new relationships and passing gas.

Farts happen, he's a keeper.

You can't help it sometimes, I would laugh so much. You probably shouldn't see him again since you sound like you suck.

At least it was just a fart and didn't accidentally become more. Yeah it's shocking and kinda gross but if you had kept dating him it would've happened eventually, if you spend a lot of time around a person you're bound to fart at some point around them.

He farted, and you put out on the first date. Are you really any better than he is?

Honestly, if this is how you deal with someone passing gas, you may not be mature enough to be having relations.

So you are mad at him for being human?

Just jumping those relationships milestones quickly huh? You'll be married and popping zits in a week or so. On a serious note maybe he doesn't care about that stuff, or is ready for you to leave.

grow up

??? What ? Everything screams "extra superficial" about you right now. You're willing to have sex on the first date and plan to see the guy again because "he's too gorgeous" but when he performs a perfectly natural bodily function it's suddenly a deal breaker ? Hell you must not have long term relationships that often. No wonder you jump in a guy's bed on the first date.