Would having sex with only one person in your life bother you?

I have a few friends that broke up with their first proper bf/gf because they didn't want to only over sleep with one person. Not that they've became promiscuous, just that they wanted a small-ish number. To be honest it doesn't bother me. I'm in a relationship with the girl I lost my virginity with (she was also a virgin). We've been together nearly 3 years. If we do stay togther in the long-term I honestly don't care that she'll be the only girl I've been with. What's everyone else's opinion on this: would it bother you?

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