I had four similiar hands this week, both of them I have two pair show strength and meet resistance, once was heads up I had top and bottom he had top two, go figure but I had made the choice on the flop whether my hand was good and took the lump the time it wasn't. I'm shooting 50/50 on these spots this week over all so take my words with caution. Although the times I've lost the stack has been shorter than the larger stacks I've won, so it looks better numbers wise
You have to decide what range of hands he is likely to have, and pull the trigger either on the flop or turn. I often prefer the turn because many people will gambull it up on a draw over two cards but not over one while committing more money out of position to you if they pulled some weird check raise junk.
Hands that beat you from unlikely to likely 99, KT, 22 I include 99 because if he thought you were on the draw he might very well check raise his nines being an aggressive player in early he may or may not raise the nines, I know I only do about 50% of the time from his seat and I'm semi-loose-aggressive. Hands that you beat, any non connected pair, AdQ AdJ A9 ATd weaker two pairs like J9s and two diamond hands.
ATd for a gutshot with over cards that got to open ended at the turn is what I put him on if I had to make a guess given that he is an aggressive player in early two suited overs is a playable hand. He might very well play that draw for his stack at the turn, and you have a lot of cards to dodge on the river. I think you were ahead about 3:1 if I read his hand correctly, but I don't know when dust settled that you would have stayed ahead.