A sentimental question

Hello LadySally,
Here is what I would like to know: how will my romantic situation evolve? I actually reconnected with an ex (Darius) a year and a half ago. We started a relationship that he quickly ended due to his family problems; I supported him and “waited” for him to be more free in his mind. And now he is dating another woman… So I would like to know whether he will stay with her or whether I can hope to have a serious relationship with him in the near future? (Because I am now wondering whether he was sincere.)
Thank you in advance.