Was this flirting, or am I just bad at reading people?

Gracie811
I recently became friends with a guy who I think might be flirting with me, but I'm not sure because I'm not good at reading those signals. I'm curious about one interaction in particular.

We were hanging out in my dorm room (just us, my roommate was out), and he was sitting in a bean bag chair. I casually laid on my stomach at the corner of my bed so I could look down and talk to him, and he pulled out his phone and took a picture of me, then said, "You look kind of adorable like that," completely nonchalantly and out of the blue.

This may be a dumb question, but is that kind of thing exclusively flirty? Is there a possibility it was just a goofy, friendly thing? Is there a particular context in which it might be one or the other?
Was this flirting, or am I just bad at reading people?
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