My girlfriend had her first art exhibition, her beautiful works were on display, and I was clearly with her

But in a second when I went to get two drinks, I saw her talking to a guy... she told me it was Josh. Josh, I knew the damn guy, they were a couple in high school and he broke her heart. I noticed that she was tense, I put my arm around her

"Killian, her boyfriend" I introduced myself coldly to the guy and he nodded