Nemesis

Originally Posted by BigV

nemesis

noun

One who is hostile to or opposes the purposes or interests of another: archenemy, enemy, foe. See love/hatred.

Undercards:

Tonchi vs NoBoxes

Sorry, no. I have an amicable relationship with Tonchi (you don't observe our interaction in another venue). I will even support her when the situation warrants. We simply are not enough alike for a simpático relationship outside of superficial common interests.