Insecurities

My ex boyfriend, who I recently just left, would always try to bring me down and make fun of the things that made me happy. Just yesterday, he called me malnourished. Yes, i’m skinny, but i’m far from malnourished. I didn’t think much of it in the moment but now it’s starting to get to me. Was he kidding? Was it serious? Was that what he really thought about me?? All these questions keep going in and out of my head. Before, he used to say he wouldn’t date thicker/chubbier women because he didn’t like that but now i feel like he was lying because now he’s screwing/ messing with another girl that is on the heavier side. I didn’t care much about that either. I like my body and yes, i’m skinny but i can eat anything i want and still feel good about myself regardless. I have nobody to vent other than here because no one really cares but i’d like to know similar stories and how you all have overcome it.