rule of thumb: don't get involved with ex's... it always turns out uglier than it was beforehand.

 

it didn't work the first time, what makes you think the second will? Unless you havn't had any for so long and you're about to burst... go for it then run back home.

 

Personally, I'd go middle road here. Like, if I was in your place when she invited you to bed, I probably (while actually wanting to really spill my guts) would kinda feel out the situation by saying something like, "You know, that sounds good, but I'm not sure that would be a good idea." That probably reads differently then I'd want it to sound, but the point is, dropping a fairly strong hint that I still have strong feelings and I don't want to get stomped on without coming right out and saying it. This way, you've got at least part of the satisfaction of speaking your mind without creating an uncomfortable situation and retaining deniability in the future should you need to do so.

Just my $0.02