Married at 26, cheating at 27

Hi all, Ive been together with my husband 7 years and we got married last year in September. However my world completely changed when I found myself kissing a coworker in December last year.. since then me and the coworker have fallen in love and I have been having an affair with him for 10 months.. we are in love and obviously I have to make a hard choice.. 1. try to start over with my husband (who is a caring lovely person but I am no longer attracted to in a sexual way.. I see him as family) or 2. completely restart my life with the other guy. And I mean completely restart... I would be living in a foreign country, no family, no friends... who has experienced this before and what is your advice on my situation. I am finding it hard to understand how to know which choice is best for me and what I want in all of this.