Should I be Moving on by Now?

At the end of October a girl I know told me she had a bf and I really, really like her. I've always had feelings for her and now they've only gotten stronger. In mid-November we talked more about it, like I told her how I feel (I really care about her, want her to be happy, etc.) and she said that I would "get over it" or that "it will pass". In other words, she doesn't really want me to feel this way. She's still super nice, understanding, and caring, but I can tell that this guy really makes her happy- not me.

I don't look at any other girls the same way as I look at her, but there is a girl I just met who is pretty cute, she's smart, athletic, full of smiles, and I think that she might like me. Should I already be moving on from the girl I've had feelings for for a long time? I feel like me saying that I care about her a lot and then going off and being with some other girl is really hypocritical. Any advice? Thanks for reading, have a good day!