I should give you a standing ovation for the maturity and strength you showed in your decision. I would be wary of such a guy - this friend of yours who encourages you to leave your husband and thinks you will find someone soon enough. Let those who have been through it tell you of how lonely it can get and how you regret every day of your decision to separate. It is always better to stay with your spouse if you can. I wish you the best. I really admire you.
