[Tryptamean]

I think this is a super easy b/f. You know you are toast if he raises, so the folding part is not hard.

Also, he could easily be getting his calling chips ready. You miss value by c/c this river IMO (could even be a c/f after he bets as some have mentioned). I think it was mentioned somehere in SSH that one of the rules of thumb is to value-bet relentlessly against LPs.