He's fine for sure but I wouldn't see them as a long-term couple. Plus, she's with John anyway. He's too clean-looking and I don't think she'd find any kind of inspiration from that kind of guy. She loves tortured soul kinda guys like Russell Brand and John Mayer.
Those pictures are going to get John absolutely MAD tho.
They would make a sexy ass couple. Look at those pics I doubt it was anything more than flirting/one night fling, but I hope she wakes her ass up and dates someone as attractive as she is. Snatch him up Katy!