did he leave because you told him to choose between you and her or because he felt you did not trust him and you were jumping the gun (jealousy) and either needs a break to look at the marriage or is ready to end it. you say he does not talk, does that mean he never said why he left. if so, you have to ask yourself if there is no communication at such a crucial time, kids or no kids...you cannot live without communication. you cannot feel your way through a marriage. both have to talk and share their feelings.