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I've been going out with my girlfriend for 7 months now. She's the first girlfriend I've ever had, and the only girl I've ever kissed. We both just turned 19. Anyhow

We've never done anything more sexual than French-kiss each other. But the other day, I was surprised when she told me she'd orgasmed on several occassions while making out. I'd never heard of this before - how normal is this?