Second Chance Love

Jace isn't the Jace you used to know, he is cold hearted looking for sex and that is it, and that has all its ever been since Clary was murdered by Sebastian, he doesn't care for anyone until he meets Jessie, she a lot similar to clary she was a shadow hunter living as a mundane, they have a sexual attraction for eachother but can they face their feelings for eachother especially since Jace feels guilty from moving on without clary and Jessie afraid of getting hurt what should they do?