Feeling The Need To Pee?

Context, I’m a 22 y/o virgin, and I masturbate via clitoral stimulation (vibration, rubbing etc never penetration).

I have a new boyfriend and he recently tried to finger me, which felt nice, but after a while instead of an orgasm building (which I know from masturbating) it felt like I had the strongest urge to pee, so I stopped him. He laughed and said that it was my G-Spot and it was supposed to feel like that, that it was a different kind of orgasm than the ones I’m used to. He also said that if he was wrong and I did end up peeing on him, he’d forgive me, but I ended up getting so embarrassed at the thought of peeing during sex that I had to stop.

So. Was he right, does anyone else feel the need to pee? Any tips for getting passed that feeling? Is it worth it, or should we just try something else?