Is my friend falling for me?

Hi, I’m sure you guys hear this one a lot, but I really can’t figure it out. My best friend and I are really close, we usually say something to each other at least once every hour we’re awake and usually talk for hours and hours on the phone when we get the chance. I’m the person she comes to when she needs to talk about anything and when I feel like I can open up, I always go to her. We’re so close that all of our friends say we’re going out and we even joke about it a lot. The creepy thing is hot perfect we are for each other, we’ve both admitted it, we complete each other in every way, and I am positive that, if we were closer together in height, we would be going out (I’m short and she is tall). Anyway, she said a while ago that she could never go out with someone shorter than her, but now, I’m really wondering whether she is falling for me. She always wants to hold my hand, and when we’re talking, I’ll often notice that she’s put her arm around me or is staring at me, or has her hand on my face and she lets me do the same to her, which she never lets anyone do. She gets really irritated now whenever anyone says anything about us going out when before she just laughed like it was a joke. I know she has crushes on a couple guys, but with her slowly becoming more “physically close” to me, I’m starting to wonder if something more could be going on. Do you guys think she might be falling for me?