One point of discussion we could have here, coming to think of it:
Of all of lena's potential lovers besides Ian, Jeremy is the only one that denying him does not bring any wits points, actually fucking him can bring you additional wits points twice (1 if you get the 666 on the mobile phone scene, 2 if you reply to him "our secret?" in the first sex scene). Let me get technical for a second:
Robert: you have two occasions to get wits points by denying him: 1. if you insist on knowing what is going on at the restaurant 2. If after kissing him, you refuse to sleep with him.
Mike: you get Wits points if you choose the humble outfit and not opt for Ivy's top. And then even if you like him and flirt with him, you cannot fuck Mike because you have chosen the modest outfit (actually, even if you fuck Mike on that night but come back to the club in a modest outfit, you cannot suck him and his road is closed, EK is stupid like that, we are used to her fucked up brain by now).
Axel: you get wits points if you choose I don't want to speak to him, and if you do, if you choose you don't want to meet.
By this time, if you have made all of these Wits choices, Lena will not flirt with Mark or Jack or John.
Jeremy is the one exception.
You can have the ultimate Wits Lena, and yet have her being a queen of spade.
One more stupidity from EK, but we have already lost all our illusions right ?