The discussion above is really interesting.
My read is that he is holding JJ. From the flop above, this is a tricky play. All hero needs to have (or get) is Q+ pair and villain is dominated. So in my view the check/calling is valid. But, worryingly in MP1 position he didn't raise. I wonder how many people try to see the flop as cheaply as possible at micro level?
RVladimiro shows he could he holding other cards and makes valid and valuable points. If he had 55 the full house allows good value betting. Check/calling until river gives Hero opportunity to make a hand, so aggression would be indicated. If he had trip 10's again this should indicate aggression. Either way Hero is dominated.
If he were bluffing
to the river he would have tried to take the hand down by grabbing the initiative at the flop or turn - this leaves the failed flush draw and the river bluff, check raising as a bluff, in this specific hand, is a very clever move not one many players would employ in micro stakes, in my view.
My read is that the Villain made is hand at the river : Full House J's over 10's
In my opion the correct play for Hero is fold.