3 year relationship gone bad.?

MY ex of 3 years just walked out on me. No signs nothing. we strugglen w/ $ i been outta work for a couple of months. He came home 1 day and dropped off my car keys and cell phone. Walk outside and never came back in. I went lookn for him. and had no idea where he went. I looked around notice suitcase gone no clothes of his in the home. He had it all planned out. Placed the suitcase that mornin in the car had a friend follow him home and dropd off my stuff and ran out. never told me anything later i find out hes renting a room (friends) and bought a car. left me w/ the bills. i waited 4 days he never came home. i went 2 my parents telln them i need 2 bak. I'm now moved bak home. he thought his friends would help him out but i gues not. he bak at my condo livin there now. sayn he left 2 get another car to help us. but i realy think his plan backfired on him. i felt like he used me & when he felt independent he walked out n forgot bout me. he wants me 2 mov bak what do i do? its wrong