[tagtastic]

I think I'd fold here.

Becomes too tough to play this oop on the river. He'll have air here a decent amount, but even his air likely has at least 6 outs against you and there's a good chance he'll follow through with another bluff on the river. Also there's a reasonable chance he has something like 44, 54, 64. Small chance he's mixing it up on the flop with a set or 78 too - this is the kinda thing I try against a good regular once in a blue moon since it's so hard to read. Especially one I have a lot of history with.

So yeah, with a fairly small amount invested I fold here to avoid a really tough river situation.

If you do call here, I think you have to call almost any river.