The new woman

Does it mean that the new woman is better than me? Did he choose her over me because he likes her more?

I feel so worthless. One week he was saying how we should start seeing each other more regularly, that he feels comfortable and relaxed with me and then out of the blue he ended it but then a few days later he wanted me again. He even parked outside my place and called me from there asking me to stay over. He told me he was damaged and not good for me but then I heard he got with someone else a few days later! He'd said how he'd be there for me still but he hasn't and it hurts so much that he's with this other woman now.

I'm so new to all this and feel so lost some days still.