how do i heal and move on?

my ex boyfriend and i were together 3 years and on saturday i found out he and his co worker had feelings for each other and have for months. they were both in relationships. he also told me on saturday that he doesn’t love me the same anymore and haven’t for a while now. he kissed me, fucked me, and told me he loved me all while knowing it wasn’t true and that he was thinking of somebody else. he talked about this co worker all the time and told me she was his favorite co worker and his best friend. he even tried getting me to quit my job and work with him and her so he could focus on me instead of her. i’m so glad i never did. how do i move past this and heal? i feel like i have no control and i feel like i wasn’t ever good enough for him yet i still miss him and a part of me is waiting for him to come back.