7 handed I am MP with
![The Eight of Hearts [8h]](https://www.pofex.com/images/smilies/8h.gif)
CO (Pretty new to the table, but seems to be playing a lot of hands. Haven't seen him get out of line post-flop yet.) raises to $1 ($17.70 behind) and I call.
![The Nine of Spades [9s]](https://www.pofex.com/images/smilies/9s.gif)
Check, check
![The Ten of Hearts [Th]](https://www.pofex.com/images/smilies/Th.gif)
I've picked up a ton of outs there so I bet $2, CO calls.
![The Jack of Hearts [Jh]](https://www.pofex.com/images/smilies/Jh.gif)
I figured that river would scare him so I went for another $2 bet again thinking that may be the only thing he called, but now he raises to $7.25
I'm not folding, but can I put him on anything other than a better flush? Am I pushing or just calling?