Was popping off with my jungler one game. He was hard stuck trying to get gold. I have like 5 other accounts and I usually get gold every season (for rewards). We duo, I'm dodging trolls for him taking LP losses and swapping accounts around to avoid timers. He starts feeling the pressure as he is approaching Gold, makes foolish plays and starts flaming everyone. I understand his frustration so I ignore it. Get him into series, he calls it a day. Tries to do his series alone, fails miserably. We get him into series again, he calls it a day again. Next day I ask to duo and he says he's ready, then quickly says "wrong person" and that he wants to duo with his other friend so he can win. Fails again. Get him to series again, don't even bother asking if he wants another, and go about my climb. He gets gold by duoing with his bronze friend for easier opponents, never plays with me again. I ended up getting gold on all my accounts and am continuing to climb because I want plat now.
Moral of the story is fuck duoing.