am I overreacting? ig hoes πŸ™„πŸ˜’

So me & my bf are in a long distance relationship. Recently why looking at his instagram I noticed some girl commented on lots of his pictures.. '😍' 'mine😩😍',           'daddyπŸ‘…πŸ’¦' so first instinct was to screenshot & send them to him like 'wtf' he says he don't know herπŸ™„ so now we're in an argument cause instead of explaining he's gonna leave me on read.. says I'm mad at him for something he didn't do..
But how am I supposed to react I could of just went straight to messaging her.. but I tried to talk it out with him first.. how do I handle this? 
Should I just message her..πŸ™„

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