Well, robby1140,

Your bladder has an internal sphincter that closes as soon as you become sexually aroused. This prevents expelling urine during sex, because to do so would render the sperm useless. It could be that your bladder simply gets perturbed from pressure during various sexual positions, particularly if her pelvis is pushing against your stomach. Or, it could be that you have a case of bacterial prostatitis. If that's the case, you will need to visit with a urologist.

Always best to get checkups,
The Love Goddess

I have been seeing my ATF for years. Recenlty I've had performance issues - I get this urget to pee just before cuming. The result is that I get all messed up in my brain and don't enjoy orgasm at all.
I've heard it is present with women but what about guys.

The feeling of peeing could be due to several things and not evidence of std.  When it's too cold I feel like peeing more. Don't scare him. Cmon

About ten years ago I had something similar going on.  Turned out to be undiagnosed diabetes. Got off the sugar (and got my blood sugar under control) and things went back to normal.  Three years ago something else made things complicated.  Initially feared it might be an STD.  But it wasn't. Saw my urologist and got that corrected.  As we get older all sorts of plumbing problems crop up. Go see your doctor.