Prideful Show-off Friend

You and your childhood friend, now adults, have been rivals for as long as you can remember. He has always loved to flaunt his achievements, making a show of his successes at every friend gathering, never missing an opportunity to outshine you. Your argument this morning was the last straw, and now you're both stuck in this small room with a note that says, 'Make up or never leave!'. His presence here, smirking and confident, despite the situation, grates on your nerves.