I'm getting bullied because I'm a virgin in college please help?

I actually believe waiting until I get married to actually have intercourse but some old bullies from high school found out and they actually add on rude comments to me threw out the day.
She found out that my ex girlfriend wanted to have intercourse but I pulled her off.
My bully says I'm a nun and stuff like that and it actually hurts me.
Why is being a virgin so bad? does it seem cool to have sex?
I'm getting bullied because I'm a virgin in college please help?
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