Try and genuinely feel if your heart is still with him. Is there a flame that can be reignited? If your heart is not with him, it may be a challenge to try and work things out. You shouldn’t feel guilty for not wanting to be with him or even not wanting to work things out. What’s more important is understanding why you don’t want to make it work and why you feel separation is inevitable. Because the grass is not greener else where. Every spouse has his/her baggage they bring with them in a relationship. So before calling it quits, it will be cool to understand what within yourself has turned you off about this relationship and why you feel separation is best. Then atleast you won’t repeat similar relationship patterns in your next relationship.