I'm not very good at poker anymore and I dunno what to do here

[GoCubsGo]

I was playing live 1/2 the other day with about $100. Villain covers. Villain is playing tight and and aggressive preflop but a little weak post flop. I was playing tight and I hadn't played a hand in a while. Villain must have noticed, because he mentioned it a few hands before this one.

I'm dealt A [img]/images/graemlins/club.gif[/img] Q [img]/images/graemlins/diamond.gif[/img] in EP, raise to $8, one call behind me and villain calls from SB.

Flop is A [img]/images/graemlins/heart.gif[/img] 8 [img]/images/graemlins/heart.gif[/img] K [img]/images/graemlins/spade.gif[/img]

Villain checks, I bet $20, player behind me folds, villain raises all in for about $75 more.

Back when I didn't suck at poker, I think this would have been any easy decision, but I wasn't sure what to do in this spot when it came up a few days ago.