I prefer a c/r on the flop as well. An aggressive player is probably betting this flop against the two blinds pretty much 100% of the time. As far as picking up the pot goes with nothing, flops don't come much better than A59r.

As for the river, the only hands that make some sort of sense that are beating you are something like KhQh/JhTh. Only other hands i can think of are 22-55, 6h7h/7h8h or something like A4 or 34s or 46s etc. Tough to say how he plays all these, but you're ahead well over half the time.