Me and my fiance have been engaged for 6 months now and we dated for a year before that. We're supposed to get married after the whole pandemic is over.

However despite loving him I feel odd about his 2 female friends. They're quite promiscuous and they like partying and drinking and showing off their bodies in Instragram. I wouldn't mind that if they had always been just friends but I recently found out from a mutual friend that he did date these girls in the past. He never told me that and always refers to the other girl as his long time best friend and the other one as just a friend. When we started dating I asked him if he's the type of person who hangs out with his ex's and he told me he's not. So assuming our friend told the truth then my fiance lied to me.

What do you think I should do?