Does this girl like me or is just playing around?

Me and this girl met and immediately hit it off. We had a lot of meaningful conversations in person and enjoyed each other’s company. However, she had to move away to another place very far away. So we started texting. We text and FaceTime a lot, and I know she trusts me a lot by telling me a lot of personal things about herself and her family that she might not want anyone else to know. She often tells me why she feels crappy and she tells me all about her situations when she is upset. We sometimes flirt with each other such as calling each other cute and wanting to hold hands or hug etc. There is one time where she wanted me to post an image about us matching songs on Instagram. And there is also one time where she wanted me to post her photos on my Instagram. However, when I post the Instagram, she doesn’t seem like she wants to repost and let her friends know. She also wanted me to tell my friends about her and she seems very eager to know what my friends think about her, but I feel like she doesn’t want to introduce me to her friends. Right now, we FaceTime almost everyday and sleep on call. How do I know if she is just flirting with me for fun or does she actually like me?
Does this girl like me or is just playing around?
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