When do you fold this? 78hh @ $100nl

[Donkey-Milker]

was playing on a friend's comp so no HH.

120 BB's deep at $100nl 6max.

i open 78hh UTG for 3.5 X BB.

called by CO.

742r flop. i lead for $4.5 into the $8.5 pot. he min raises. i call.

10 on the turn. i check. he fires PSB. i fold.

i feel like i leak a lot of money with these hands and in pots where i flop TPBK and face action.

fold pre is my default when multitabling but i wasn't at the time.