How long can a guy go without having sex?

If a guy is aroused, he needs relief within a reasonable amount of time. I'd say anything beyond a half hour to one hour is getting uncomfortable.
It's a feeling of needing to get that stuff out. Because that's basically what it is, a need for a release.

Amen, anonymous dude has to get out there again, unless he is becoming a monk, then my hat is off to you. But honestly. I my girlfriend has moved 45min. Away for schooling and I love her so much we have been having sex for the past 2. 5 years and pretty regularly at that, then when she moved away I am now lucky to get anything once or twice a month and it is killing me. Its very hard (lol no pun) to go even two weeks without the love and affection that you get from having sex or even just making out with the one you love.
my answer to the blue balls. Oh god. It hurts like a son of a bitch. Lmao. I seem to get blue balls when my girlfriend we being her sweet sexy self and she has be hard for a long period of time but nothing comes (wow another pun) of it. It lasts (for me) about 1-3 hours. And they are one to three hours of holding my tears back. Lol. So my advice to all women reading this. Don't wear the sexy underwear ur boyfriend likes and show him that you are wearing them without getting ready to give him a hand (that was on purpose)

I could go forever without sex but my girlfriend won't let me. Blue balls is something we get when we get close but don't finish. It feels like knives are in our dick.

Blue Balls for some guys, if not all, can be painful. It is "given" to them by being brought to the point and ALMOST cumming and then stopping and not cumming. It normally does not last that long and can be brought on by a girl doing something or by his own masturbation. And to answer your question about how long a guy can go with out having sex, well it has been almost 7 years for me.

Guys' sex drives vary just like any other trait. But if they are between the ages of 17-23, they usually think about sex every waking moment. Who knows how often they really have to have it but I'm guessing at least once a week.

I feel sorry for the anonymous dude.