CO here had been getting on my nerves for a couple of rounds, 3 betting me EVERY time. Here I decided to play back at him. I'm not sure if it was a good move or tilting donk move???

$0.1/$0.25 No Limit Holdem
6 players
Converted at

Stacks:
UTG ($8.35)
Hero ($37.25)
CO ($28.35)
BTN ($8.40)
SB ($29.65)
BB ($34.55)

Pre-flop: ($0.35, 6 players) Hero is UTG 1 [As]
UTG calls $0.25, Hero raises to $1.5, CO raises to $4.25, 3 folds, UTG folds, Hero goes all-in $37.25, CO goes all-in $24.1

yup.

Super standard.

Fine...the only problem is that if this is your first time 4betting him, he can put you on a monster...however, SOME people usually fight back with crappy hands, so he may call more lightly.

The alternative is to call and CR any flop.

But, shoving is totally fine. Actually, I'd probably try 4betting smaller so that I could figure out if I could start doing it as a semi-bluff with stuff like 98s.

If he is 3-betting you alot, you have to take a stand somewhere and AKs is pretty damn good hand to do it with. That being said most players at NL25 don't 3-bet very lightly, so I wouldn't have done this with much less.