I am not has happy as I used to be and i’m noticing i’m becoming depressed?

hi everyone, i’ve been with my boyfriend for 10 years. everything was great in the beginning and now everything is going down hill. i’ve gained so much weight being with him, we don’t do anything anymore. we used to go out on dates, we used to go on adventures, we used to have fun and now everything, for me anyway, feels like a chore. he hangs out with his friends and beer more than he does me. and when we do hangout, it’s always arguing. arguing because he chooses his friends and beer over me. arguing because i can’t look through his phone but he can look at mine. in the past when i did snoop through it he has screen shot girls pictures on his phone, liked a bunch of girls pictures, and DMed a few telling them they are gorgeous. going through all that made me dim my light, i don’t feel happy anymore, let alone feel pretty at all. he will tell me that i look “gorgeous” but knowing he had easily called other girls “gorgeous” when dating me is disrespectful and disgusting to me. according to him he doesn’t do that anymore, but when i ask him to see his phone it’s a no. i assume he still does but doesn’t want to tell me to start an argument. I don't know, i’m not happy anymore and it makes me so sick that my life has become this. i also had stopped hanging out with my friends so i can spend all my time with him and i hate it. i tried reaching out to my friends and they ignore me. i know a lot of them have kids and their own family to take care of but it still makes me sad. God, please help me.
I am not has happy as I used to be and i’m noticing i’m becoming depressed?
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