Is it rebound or Will he come to me again?

A boy was in an abusive relationship for 5.5 years (girl physically abused him). They broke up a month ago because she thought he was cheating on her with me and he wasn’t. But then we both talked and we kinda came in a relationship for a month and after a month he told me he wants to live with her only but he is saying he still have feelings for me. And when she went to him yesterday he told her he needs to keep fast (religious) so maintain distance but I went to him yesterday he kissed me (saying it’s the last time we are meeting) and told that I forgot about the fast and he got hard. What should I do or think?

Is it rebound or Will he come to me again?
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