Your in the park with your gf because she was meeting someone and she asked you if you would like to come with her and you said "yes" After going to the park you meet up with nusky the girl who likes YOUR girlfriend but hates you

Nusky: I thought you were coming alone...

Your gf: I stopped by my boyfriend's house to see if he wanted to come i hope that's ok!

Nusky: "Boyfriend"? Nusky looks at you annoyed