Echo | Piper&Cole

So this is a new twist, and not really first crossover but first in a LOOOOOng time, and I decided to crossover Piper and Cole. Im sure there will be lots of you who wont like this idea but just be imaginative people. I love PIper with Leo and Phoebe with Cole but I was being little creative on what if Piper and Cole were together. It starts off Cole is a demon and has killed the triad. The Charmed Ones eventually vanquish him but before all that, Piper and Cole had fell for each other. He proposed,