Zemo was once at hydra, but then went to jail and then escaped. He helped bucky and Sam, but then escaped again... Little did the Avengers know, he's married.. To Y/N Stark and zemo is a good guy now.

Zemo and Y/N have been married for three years, Y/N convinced zemo to be good and it worked. Y/N is a trained assassin and black magic witch, zemo is still.. Well zemo, but a good guy now.

The team were on a mission, a hydra mission and needed help. So Y/N knew what she had to do.