Adam placed the double-three. Well, no surprise -- after all, it's a double, and there are already a few 3's out there.
Your turn: you obviously don't want to hit the blank! (remember, it is hurting Adam... And you like that! :-)). Besides, you started by the 2, and even though you don't have many, what the hell, "gallo que no repite no es gallo".
So you have two reasons to play the 3-2: you don't hit the blank, and you repeat the 2! So, what are you waiting for?