Feeling beautiful again

I’m feeling down maybe someone could give me tips. I used to feel beautiful when I was skinnier and my boyfriend would compliment me constantly and was overly affectionate. Well, once I started BC it made me gain weight and he hasn’t called me beautiful in months. He’ll say things like cute or things like that but even that itself is rare anymore. I’m trying hard to lose the weight back but I recently found it he’s been watching porn and looks up these skinny beautiful women everyday and it has made me feel so horrible and self conscious knowing that I’ll never be as beautiful as any of those women. What do I do to feel beautiful and get him to think so again?