the guy minraised you on the flop and he's very passive
he either has a strong draw (on this board this could only be the nut flush draw) or a two pair+ a lot of the time
however, he's actually not deep and he could be raising QQ+ for value

it kind of sucks, but given that he's not 200BB deep I think we can just flat and invite mircev to overcall and get it in on a safe turn
disclaimer: I have no idea how that plays out three way because I suck at multiway pots