is it considered cheating?

Hi guys, i’m really confused and I need some advice.

My boyfriend is in the navy. He’s been gone for less than a week and he has flirted with a waitress (in order to get the wifi password of the bar he was in). I don’t really know what to think of it but I feel hurt and kinda betrayed.

Am I overreacting ? Or is he just being an idiot? How would you feel?

I have 0 tolerance regarding cheating (my father cheated on my mom so many times). I just want to be respected