Okay, so I was getting a blow job last night, and I just couldn't come. She was going for a solid amount of time, and I wasn't nervous at all, but it just wasn't happening. What can I do to prevent this in the future?

Deepthroat

Sometimes it just doesn't happen. Frame of mind.. stress... just not being in the right mood. As for what to do to ensure this doesn't happen again, put it out of your mind. I know, easier said than done, but if you're dwelling on it next time and overanalyzing the situation you're setting yourself up for your next disappointment. Relax, and good times!

-Extant

I got a BJ from my g/f the other night. She was going for about 15 mins and I still couldn't feel it coming. So I just decided to speed up the process but kind of humping in and out of her mouth, while thinking of fucking a girl. sped it up allright.

Yea sometimes i cant, but then ijust kinda pull it out and finish and plow it on her, in her hair is the best cause its a bitch to get out.

I've been there before too. Suggestions are above. Meh.

You could always kill yourself...

Heh, Whats the best way to break this to the chick whos blowing you? "Sorry doll, you just cant suck dick." Jk..should you be like "Oh sorry my penis isent feeling his best today" lol

ask her to make you a sammich.

I have NEVER cum while getting a BJ, its not like it doesnt feel good or any thing it just doesnt hit the spot for me (and by the sounds of it some other people as well).