[X] Write in
-[X] Play along with the flirting, imply that since we'll be here for at least a few days we might see our way towards giving him some info if he gives us some in return. Use that to buy enough time to ask the Captain whether she wants us to quietly leak anything via this backchannel. If she does, exchange information. If she doesn't, make it clear next time we see him that we were spotted chatting and our superiors read us the riot act about infosec. If he just wants to keep it casual, though, we'd still enjoy some company while in port.