Help!

beverly

So recently my sex life has been non existent. I’ve been with my SO for 3 years now. I got the nexplanon implant when we first got together and it made me gain almost 100 pounds over the course of two years. We usually would have sex about 3 times a week, then it went down to once a month. He still acts the same way he acted 3 years ago, just no sex. I recently went through his phone and saw he’s been watching porn. I brought it up how I didn’t like that considering we don’t have sex very often and his excuse was that he has a low sex drive and is always tired after work. Fast forward a couple weeks later, I saw porn in his browser again. What should I do? Normally porn wouldn’t be an issue for me but I just feel my self-esteem has went down a lot ever since I gained weight. I feel like he’s disgusted by me.