I feel like I'm going to be a cat lady 😿😿😿

I can never be in a decent relationship...I always get used and tossed away. Anything to help boost esteem? The last guy I talked to we were together for 2 and a half yrs...yesterday he and up and left went to ny. He says he has a government job that he will not tell me anything about as far as the title, how he get the money to go where he's staying etc. He was just talking about how he had no money and can't do this or that..but just getting on a plane and leaving seems toooooooo suspicious to me. Any advice on moving on and building back up my esteem? Oh and the guy before him my ex husband cheated...got her pregnant and they lived happily ever after. Our children are six months apart. So I just have heartbreak after break