Nothing wrong with preflop, I would do the same here.
Wow, great flop for you. Top pair top kicker, a nut flush draw and 2 backdoor straight draws. Squeezing has to be done.
Turn comes, it's not pretty, but betting $5.50 into a $18.50 pot looks like someone after a free card with a busted straight draw or possibly a worse flush.
Of course it's perfectly possible he is scared money with a slow played KK or he has a garbage hand like 8762 that just made the worst possible full house.
I think i'm going to turn my hand into a bluff here and raise to $19, so $14 more. If he does have any kind of draw or overpair here, he can't be happy calling since we're repping aces, we could well get KK, QQ, JJ to fold, as well as T8xx.
Obvious a deuce is never folding, but we do want draws to fold as well that might make us fold on the river with a bluff.
If called on the turn I give up on the river.