so i had this boyfriend for 5 months and he made me so unbelievably happy and one night it was all our friends and boyfriends hanging out and i was on his phone and saw he had tinder and snapchat streaks with other girls. he told me he had the streak with girls from his class and that his friend made his tinder account one day and he never goes on it.. we ended up breaking up that night and less than a month later he took a girl from his class that was “just his friend and i shouldn’t worry about her” to a work christmas party. idk how to get over this situation especially since i thought he was different compared to my last ex, any advice? i don’t want to feel this way anymore and i want to move on but it seems almost impossible.