I have been running VtM in the form of the players playing as ghouls however one of my recent players has made a charmer character. I am okay with characters wanting to get laid however he considers these things to be fluff and says that he believes the flirting part is important for character development. He does not insist on roleplaying the sex part however he does wish to roleplay how he showers his love interest with kisses and most of his interactions with NPC's involve similar things.
He seems rather invested in the game so I don't want to just tell him to stop or tell him that we will be glossing over the flirting but I am starting to feel uncomfortable having to play these NPC's. It's been about two weeks since he joined and he has slept with his fellow ghoul, a prostitute and he attempted to sleep with his domitor each involving a fair bit of flirting. (As a note. I have been running him private sessions to catch him up to the group both immersion and experience vice.)
So my question is that how can I make him dial this type of stuff back without seeming judgmental or like I am telling him to change his character?