Seducing a taken woman?

Alright, its pretty straight forward, im physically attracted to a married woman. but i don't know how to go about it. DETAILS: her husband is in jail, i've known her for some time already, at get togethers she is always looking at me and smiling when no one is around, we do talk but never for long, usually because there is people around who know her/her husband. I am not sure what i could tell her or what to ask her to really find out if she is interested in something a bit more than just "friends" with out being too conspicuous just too see if we are both on the right "track". this relationship will probably just be physical and nothing more. I know she is married, husband blah blah blah.. gonna come get you blah blah karma.... i've heard it all, i really don't care so i don't want to hear that.