He commented another girl's photo, thoughts?

I feel so upset rn, i saw he liked a girl's phtoto in instagram and he also commented with the angel face emoji, what does this mean is it flirting? I know that they aren't close friends they just know each other and she has a serious boyfriend, i don't have any suspiscions he is with me almost all the time but was that flirting i'm hella jealous person and this made me crazy, should i calm down?
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I'm really upset it hurt me a lot and i don't know what to think about this, i'm afraid he will think that i'm crazy and that i'm stalking if i ask him about this, i don't know what to do please give me advice
He commented another girl's photo, thoughts?
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