My girlfriend texts me "I went to cold stone and the guy thought I was hot so I got a FREE MILKSHAKE, I'm so proud"

Now I am proud of her as well, she got free stuff good for her, but if this is a shit test I want to know how to pass it as she had said similar things a couple of times before. I'm thinking saying something like "yeah I love it when that happens as well"

What else could I say?