Hey girl, Be strong move on.This guy doesn't deserve u.He cheated on u for 9 months.It's not a joke.Infact ,this guy was/is never serious about u otherwise he wouldn't sleep with a co worker for 9 long months.I think u r the only one giving and trustworthy in this relationship.Com'n girl,this guy is not even capable of getting someone's love.Don't be emotional,just move on. I'm sure u'll find somebody a lot better than him,someone who u can trust in your life. Just move on,don't be miserable and don't mess up your life with this guy. Cheer up :-)