Guys, How would you feel if you found out the girl you’re seeing kissed another girl before?

This guy friend and I have just started seeing eachother as more than friends (but we haven’t done anything physically yet), and we are deciding if we want to take the friendship further. I ended up admitting that in high school I made out with a female friend when my boyfriend dared us to. He seemed surprised and I’m not sure if it was good or bad. To me it was just a dumb thing I did as a teenager but now I’m worried about admitting it. As a guy how would you feel if a girl told you this? Do you think it made him lose interest?

Guys, How would you feel if you found out the girl you’re seeing kissed another girl before?
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