can I bot? we're duo

I keep my role as adc, the adc in the duo goes mid and the support goes thresh, randomly ints, mid is losing, not super hard though, i get massively ahead, double kill the lane when they get cocky a few times, then the thresh is low, should just walk away and let me clean up, i'm full health, caitlyn can't go anywhere, he runs up and dies while taking the kill, so i'm like "why? all you have to do was walk away and we won that so hard"

guy proceeds to afk, i go like 12/2 and carry us to a 4v5 win, but holy shit like on one hand I feel no sympathy for gold players, then there's the people who have to play with these people that i feel terrible for