<human>: This is probably one of the milder situations on this subreddit, but I'm genuinely bewildered by this.

Whenever my girlfriend and I sleep together, we usually get in bed with me spooning her from behind. I really like doing this, but with the combined body heat, and my arm losing circulation under her head, it gets a little bit uncomfortable after cuddling for a long time. So sometimes, I try to gently move my arm out from under her head and flip over to sleep on my other side (I generally flip around a lot when I sleep by myself, it's just a lot more comfortable).

I didn't think much of this, but she gets very upset by it. She thinks it's very strange that "I don't always want to hold her." I think it's strange that she thinks it's strange -- sometimes it's just uncomfortable to hold her for the entire night!

She also said that she feels like I take the time that I have with her for granted (we are in a long distance relationship, we see each other about once a month), and that if I really cherished our time in bed together, I would always want to hold her.

So essentially, she wants me to lay still and hug her for the entire night, and I just want to be able to flip around to my hearts content and not care about which way I'm facing. She's bothered because she feels like this shows that I don't love her enough. I'm bothered because it seems like she doesn't really care about my comfort/discomfort. 

Is she being unrealistic? Am I being selfish?

Can you give me the gist of the text in a nutshell?
<bot>: Girlfriend is genuinely upset that I sometimes turn away from her while sleeping, and I'm mildly upset that I don't get to sleep comfortably.