Love Thy Enemy

What if Edward was part of the CIA, who are hired to kill people. He is knowned to be the best along side Emmett and Jasper. Their job is to get close to their target, earn their trust and kill them. To blend in, they work in business as a cover. But now its different because their targets are Bella, Alice and Rosalie and some of the characters are siblings. What if as gaining the girls' trust, the boys fall in love with them? What will happen if they don't have the strength to kill them?

Siblings:
Emmett & Bella Swan
Jasper & Rosalie Hales
Edward & Alice Cullen

This is my second ff. My first first one is called Are We Meant To Be? (not completed but working on it)
Let me know what you think if I should continue. Im really excited to write this fanfic! :)