Hello Everybody,
I have the following situation. I am currently doing a semester abroad and my ex-gf is coming to visit, as she is on vacation a few hours away. we split up on decent terms and hung out once since. however, she made me sleep next door.
This time around, it's been 3months or so since i've seen her and we've been msging a bit, on quite friendly terms. She'll be staying with me for 2 nights, 1 room, 1 bed

.
I know there's still attraction, but i'm wondering, what's a good way to smoothly introduce the notion of friendly sex? I don't want to break in with the door. I don't think she has a bf, so that shouldn't be a problem.
I'm happy about any ideas.