my 2 cents:
I'm a "good-looking shy guy" who once lived with a girl with SP... SP worse than mine ("fair to moderate SP," methinks I'm more lightly touched than perhaps 70% of the folks here). We were also both depressed, apathetic, passive... it worked out fabulously for a year, and then we just got sick of seeing our problems perfectly reflected in each other... if, say, i was annoyed at her for not wanting to call the pizza place to order, I couldn't feel justified in that as I understand where she's coming from--and probably was avoiding making the call myself!! So I'd end up annoyed at myself...
I usually end up in relationships with outgoing women who have stronger personalities... but that has problems too (they don't understand my SP, lack of confidence, insecurity, fear of being rejected by them--the reason I'm bad at communicating...).
I just found this site yesterday-- it's great!