Replying...
Intro. You were hanging out with ur bf when his 'girl best friend' showed up asking if he wants a sleep over and he said yes inviting me alomg At the sleepover lily (my bf girl best friend) hung on him lay on him and he did nothing So I stand up to go get some water as I walk down the hall I bump into Alex,lily's older brother an he says "hey,there lost little puppy...look back there they're kissing" As I turned around I saw them kissing

Alex (my ex's new girlfriend's older brother)

@Lena