Thanks for responding.. There is no sneaking around, I'm well known to all as her boyfriend. I believe they live together because she just got a job in October, he worked, and she did the 'chores'. Don't get me wrong, she's not sneaky or gold digging etc.. i just assumed they were together for the kid.
I really dont' know what to do, I can't remain second fiddle... it's cold at night! Actaully, I know i have to talk to her about it, but i know that it could be the beginning of the end - when does one leave well enough alone?
As for the 12 years ago thing, we were 18 and i believe we have both grown since then. Also, in the last 12 years i saw her many times (mutual friends events etc).