<human>: Can you provide a brief rundown of the text in within 3 sentences?

First the background:

We seemed to hit it off really well back in the day.  She came on to me back then, we had sex a few times, but things definitely slowed down while I was at school.  She wanted a break to play the field, and I was ok with it at the time.  

Fast forward one year, she indicates some interest again, I reciprocate, but it doesn't really go anywhere since the summer came to an end.  At this point I kind of called her out for playing me a little bit.  To this day I'm not sure how she handled that internally. 

Fast forward to the present, we've been talking a bit, went out once for lunch/indie film.  She even brought me to a family friend's **empty** house after when she needed to let their dogs out.  (I wanted to escalate, but felt a little weird in a stranger's house.)  She's been really friendly with me, but hasn't really been going out of her way to spend time with me at all.

I know this isn't all too specific, but I posted here because I just care about her, you know?  I really do want her to be happy, and given our history I would hate to do something that pushes her away-even if that means we can only be friends.

I've been considering being straight up with her, but again, I just really really don't want to make her uncomfortable.
<bot>: Boy crushes on past fling/girlfriend, but really wants to respect her space.  How do I do this with words?