For the past year I haven't made much effort to spend time with her and we haven't talked much either. In the brief moments that I have gone to her house, one of her concerts, or to her church I have noticed she is more eager to hug or just make physical contact in general. She also mentions stuff similar to 'I almost stopped by your work on Tuesday night when I got off, but I wasn't sure if you would be there or not'. This weekend me spent a lot of time together. We went to a dance party and after the party when we were all gather at our cars I mentioned how I really didn't want to drive home and she eagerly offered to drive me home and back up to the college on Tuesday, and she kept giving reasons to drive me home even though she, and everyone else, knew I could drive home. (I was sober and consumed no alcohol). Then she made an off comment about how she wouldn't see anyone the next day, so I jokingly said 'I will come see you at your church!".
The next day I didn't visit her at her church because I jokingly said it and thought she knew I was joking. She texted me asking if I was coming or not. I told her I was too busy to come by and that she should come to a potluck lunch at my church. She came to the potluck and was again more physical than usual. After all our friends had left the potluck, she stayed after and we talked for a good half-hour before she had to leave.
I know she still has a boyfriend, which makes her 'off limits'. But I just need to know, for my own ego, if her feelings have possibly shifted from me being her brother to me being a potential romantic partner if she ever becomes single.