Beginner Limit Hold'em : Is this a fold...or!

With no read this seems like a pretty easy fold. Our draw is super weak and we're OOP with 7 high. Our pair outs, if we have any, could also be tainted by either flush draw if he's semi-bluffing.

The bad part about three-bet bluffing is it looks like we'd be priced in to call a cap. I guess a good read could change things but as a default I would fold and move on.