I think you have to cheat to get it going on with Jeanette, seeing how early in the game you meet her. I've never managed to do it, but someone on Gamebanshee told me it was possible to get frisky with her. Not even a Toreador has stats that high at the start of the game though, so again...i don't think it's possible without cheating yourself up a few levels on the charmscale. You also have to keep her happy at all costs, so do exactly what she asks from you, and choose her side when the pistol scene comes along. That should be enough to trigger a romance between Jeanette and your character.
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