i’m only 16 so of course feel free to ignore me, but i am in a similar position. Well, in the sense that i know my boyfriend slept with another girl when we weren’t together (on a break) and even to this day it makes me feel sick to think about. Even though i know he loves me and he promises me he would never go back there, it still plays on my mind and i can’t control it even though i trust him one hundred percent. I think you just have to remember that this was a crazy holiday where the both of you were not expecting to find a relationship. she probably was just enjoying getting to know people that week too, as is her right as you were both single. She probably only developed those feelings later when she started to get to know you, but before that she may have just wanted to have some fun. She should have been open about it straight away of course, but just remember that she wouldn’t be in a 9 month relationship with you unless she wanted to. Yes, she may have slept with that guy before you guys had even started to become a thing, but who was she to know that nine months later you’d be a couple? The fact she’s made the long distance effort further proves that she wants this to work. Try to move on and accept that it’s the past – it doesn’t mean she doesn’t love you now. I’m sure you had the intention to sleep with girls that holiday before you realised you wanted to be with her
