Too many problems

Hi so I am a 26f and have felt a lot of depression these past few months it feels like karma is really out to get me. I met a guy in August 2025 and we started dating well shortly after he moved in with me & everything seemed great one day we got into an argument and he pretty much left to be with his kid bc he was given the option well he did just that we’re are working on our problems as a whole and just back into the talking stage. Life’s been hard though due to him leaving after being with me for a few months and I really feel like given up one I get use to a routine I fall apart when it goes away. Life’s been testing me & pulling me and making me think he’s cheating on me which I don’t believe is bc we talk 24/7 and he reassures me 24/7 I just miss him and feel like I can’t even work eat or anything without him being around every day I’m just praying for better days in hopes he will come back at the end of the month like he says so. Why do I let someone control my happiness so much.. I lay here and bed rot & listen to sad music all day waiting on him to come back home..