[jrz1972]

I could be offbase here, but I don't think this particular river bet is mandatory. In addition to the straight (which is unlikely given that it came runner-runner), it is really easy for a loose villain to have two pair on this board, since loose players will happily coldcall with stuff like KQo preflop.

Also, we know this villain is aggressive. Apparently, OP thinks villain is overly-aggressive enough that we have to pay off a raise. That changes things. Against a known passive, we could easily bet/fold the river, but betting is much riskier here if we think we have to pay off a raise.

I'd definitely value bet this against a passive opponent, but it's okay to forgo these sorts of value bets against aggressive, tricky, or solid players. This is just a little too thin for me.