Originally Posted by g33k

I am not sure what you mean by liking someone when you are in a relationship. It is unacceptable to have feelings for your ex. You have to completely forget your ex before moving on. Otherwise, it is not fair for both, yourself or your partner. You can find others attractive but does it mean you want to start a relationship with them?

I am not really sure about the history about you guys but seems he wants to try it with someone else.