I can't imagine Lucca and Magus being together cause...well, did they even really SPEAK to each other? Really? Plus Magus would be like "Woman, I'm too haewt 4 u."
magus is an albino black woman who speaks in interwebs?
Actually, I can at least imagine him saying "Woman..." like that, rather haughtily.
Personally, I don't think there would be anything between her and Janus, nor between her and anyone else. Not with the sort of role she seems to play. She's far too preoccupied otherwise, her mind being given over wholly to science. Learning is her husband, essentially. If any of you've ever read the Silmarillion, there's a description of the Dwarves that is apt here for her, in that she is so mindful of her crafts, she doesn't even desire someone romantically. Now, it might be conceivable, but it would have to be someone of different temper than Janus, certainly. It is true that enemies can become lovers - look, for example, at Benedict and Beatrice in Shakespeare's Much Ado About Nothing for an example of two people who seem to abhor each other yet fall head over heels - but with her and Janus it would rather be indifference, on both their parts. Judging by the time spent together, I could see a bit more with Glenn... yet he, too, has more pressing issues and duty that constrain him. And, quite honestly, not everyone has a good star for love. Some people, especially of that more academic sort, are rather frowned upon by Aphrodite, and Eros pays them no heed - sometimes for no particular reason, and sometimes for a fashion of Hippolitan oath. I do not know which for her (either is likely: she might easily have no luck with romance, or on the other hand have wholly foresworn it), but do keep this in mind: not everyone has, or even needs, a lover.