I don't think Bioware likes Femsheps, if you look at all the LI's for them and compare to Maleshep's
ME1
Femshep's: Kaidan - L2 Biotic, prone to headaches, possible tumors in future
Maleshep's: Ashley - No health issues, well read (poetic) slight xenophobia maybe
Either: Liara: Young, growing, learning life (only 106)
ME2
Femshep's:
Garrus, nice personality, but no lips to kiss, metalic exoskeleton, not very hugable, cuddling be problematic.
Thane: Might be ok but for two reasons, 1. he's dieing, 2. as Mordin explains "Drell skin can cause
hallucinations if oral contact occurs". cheap drugs eh?
Jacob: Lights are on, no one home, Shepard is an intelligent, strong willed persona, Jacob doesn't
compliment it in the least, moron.
Maleshep's
Miranda: Intelligent, strong willed, good looking (created to be anyway)
Jack: borderline psychopath, give her time with Shep and might turn out ok. or might just shoot you.
Tali: intelligent, nice personality, but has to live in the suit.
There really isn't any Femshep LI's in ME2 that make any real sense or give you a
warm fuzzy feeling, have to worry if they are going to fall over dead on you, space any
kids you might have cause they are a moron, or accidently poke your eye out while sleeping.
SO! to answer the question, staying with Liara