He told his ex about me, will they ever get back together?

I'm dating a fellow grad student in my department who told me that he and his girlfriend deceided to see other people, before he left home, and possibly get back together once he returns to his home state after graduation. Now he told me that he told her about me and she said that she wont focus on us, because her focus is for them to get back together once he returns. does this means that he has strong feelings for me in order to tell mer about me? It sounds like they communicate with each other often