Fold preflop both times, and probably just c/f the flop unless you have a good read on the guy (like does he always continuation bet the flop and check down from there if he didn't hit?). Even if we are ahead right now, we can't stand any pressure on later streets if he continues bluffing/semibluffing. We also need to consider the fact that he likely has 6 outs when we're ahead.

Suited connectors generally need position to be profitable, so look to play them on the button so it will be easier to draw and to steal.