Please tell me if i'm wrong to feel the way I do

My sons Father and I were in a relationship that took off fairly quickly. We were together for 2 years. (Engaged six short months after meeting) Things had gotten extremely rocky at times and it was unbareable. I've always been the type to want my own job and money, but in the beginning, he'd tell my family/friends (oh she doesnt have to work, she can stay home blah blah). I became ill and wasnt able to work and at that point, he was carrying all the weight at home. I did my best to keep things in order, (household duties) I just became so tired of being taken for granted. We lived in an appartment building on the 3rd floor, He refused to help bring groceries in, garbage would pile up, qnd he would refuse to take that out as well...I'm a neat person so i kept things in order (he would NOT care about keeping them that way) left dishes in the sink, fook containers everywhere etc. We became strangers basically living together. We finally moved out of the apartment. (Separatly) during this time, i would go to his "bachelor pad" attempting to work on the relationship. I just couldnt get past how CLEAN it was. It was the worse feeling walking in and seeing how easy it was for him to be tidy. Fast forward to a year later, he has a girlfriend. Whom he said was his "roomate". (I'm not stupid, i know better) We co parent well and he claims he told her from the beginning the type of relationship his sons mother and he has. My issue is this, A month ago he sat in my face and said if i could give him 100% he would drop everything he has goin on. I told him i was around 80%. A few days ago he posted a social media status photo of him and his gf that read #powercouple. I also found out they are signing a lease together in their new apartment. He says i'm "in my feelns". But its not even that. I just feel it was EXTREMELY disrespectful and shady (the heart to heart we had) and then u go and do somthn like that 30days later. Its been over a year, i dont expect anyone to sit around with no type of companionship but this is a little extreme to me. His response to me about the convo we had was "basically saying his peace" Please. Any advice on this topic is greatly appreciated