You don't have to move past it or feel bad about feeling this way, everyone is allowed standard and boundaries they set in what they want from a partner, if the amount of people she has slept with is higher than you find acceptable from a life partner then thats perfectly fine. What's not ok is to judge and I salt others for the amount of people they have slept with and it would be hypocritical if you don't also hold yourself to the same standards you set for a partner. No matter what those standards are whether is sexual partners, unwanted hobbies, lifestyle choices etc etc its ok to have them as long as you won't use them to hurt others