/ck/ - Food & Cooking

Had an unpleasant experience at a buffet recently.

I went there with my girlfriend and the place was completely packed with people. I happened to have a bag containing my £1000 laptop with me, so I asked my girlfriend not to go up at the same time as me so that she could keep an eye on my bag. I went up to get food, and when I came back she was gone and my bag was just sitting there at the table unattended. This made me pretty angry so I had a small argument with her when I got back. She claimed that the waitress had "pressured" her into going up and getting food, so she called the waitress (who was Chinese) over, who began telling me that it was fine, there was no theft here, I said "okay" just to get rid of her but she kept going on about it for another 2 minutes or so. And then halfway through the meal the waitress came back again and started going on about it again.

By this point I was really pissed off. I didn't talk to her for the rest of the evening, and when we got home I smacked her up a bit. She broke down in tears, but an hour later things were fine. I'm wondering whether I was justified in my actions, or am I actually a huge autist who overreacted? Women need not reply