help

alright ima try to keep this short. my girlfriend and i have been dating for over 2 years and this shit is still bothering me, idk what i need from this either, whether it’s reinsurance or someone who relates but i’m a virgin; or was a virgin idk but my gf is the only one who’ve i’ve had sex w and im not her first and it makes me feel sooooooo bad. knowing she’s been with more than one person sexually kill’s me inside and i know she can’t fix it and i know it’s not her fault and i should be a big girl but not only was it with other people it was with men…. twice her age…. god all i do is hyper fixates on what it made her feel like or if she liked it or what they looked like. idk but it bothers me sk fucking much like actually. AND THENNN I FOUND A SNAP FROM LIKE 3 YEARS AHO RECENTLY FROM HER SAYING “HAPPY BIRHTFSY TO THE ONLY GUY THAT MADE ME CUM” BUT MIND YOU SHE TOLD ME IM THE ONLY ONE WHO MADE HER FINSIH. Anyways im not breaking up with her cus of this but it effects me a lot idk what to do lol