Okay, I've been dating my boyfriend (Jeff) for almost a year now and him and his brother (Tom) live together. Recently, Tom allowed his ex girlfriend (Stacy) to move in to their house (he dated her for almost 8 years and they've been broken up for about 2 years now; but they were an on and off kind of couple). Well, Tom is in love with Stacy, Stacy has a boyfriend that lives out of state and is not interested in Tom the same way he is in her; she just wants a free place to live, and to top it all off Jeff and Stacy have had sex a few times about three years ago..... So yeah. My boyfriend is currently living in a household with some chick he has banged. Tom does not know that Stacy and Jeff have had sex and would be crushed to find out. I know it was a while ago, but i still feel like she can be very flirtatious.. I don't know where to turn or how to handle this situation.. She goes in Jeff's bathroom and gets his dirty towels and wash rags and washes them, along with going in his room and taking his dirty laundry and washing them as well. I don't want to ask my friends or family for advice because i really don't want them knowing my business. Me and Jeff are great, we've talked about marriage and i really feel like he is the one. He treats me like a princess and i do trust him. I just don't feel comfortable with him living under the same roof as this girl he has banged before. Advice, please.