My boyfriend and I have almost been with each other for a year. He's 20 and Im 19. He dated (we'll call her May) for about 9 months until he found out he was cheating on him with multiple men. About 4 months after they broke up we started talking. He's attractive and a charmer so there have been plenty of women in his life before me, but he's always talked about her. At the beginning of our relationship he'd talk about her frequently, good and bad. Then i could tell we were starting to fall in love. He was head over heels for me and i was also for him. He'd bring her up rarely and i would never put a second thought into it. He made it clear he only wanted me. I then stumbled upon her Facebook page. They were still friends and i saw he liked her most recent picture. It was a slap in the face. It shouldn't have been, but who wants to see the face of someone that hurt them so bad. And then he liked a picture of her cat on a different media app. He loves me, I know he does but I cant help wonder if he'd go back to her. He cheated on his previous girlfriend with her before, why wouldn't he with me. Ive talked to him about it, and he said he cant stand her and they don't talk and the next day he likes her picture. Im not trying to seem crazy, I'm trying not to be paranoid, but i cant help it. He's liked other girls photos but the only one I'm concerned with is her.