My advice is just because he turned her down (and he may really mean that, that he does not want to be back with her) doesn't mean his heart has had time to heal from it. Him still liking/viewing/commenting on her social media is a CLEAR indication that he has not moved on. And how could he? As much as someone may want to heal from a break up, only time can actually do that, and there has not been enough time between the breakup and you meeting him.
see the review