Well there definitely must be something going on there (not necessarily an affair) to conjure up your suspicions about this.

Maybe you're going through a bit of strain in your relationship or your feelings have changed and everytime he does something, no matter how small, alarm bells ring in your head, furthering the cycle that you believe he's being unfaithful.

You're not ridiculous but it sounds as if some counseling is in order, for you, and then maybe couples therapy.

Please don't leave on a whim with your kids because you are suspicious that he may be thinking he might have an affair.

You only move to plan B if you have PROOF - not suspicion - that he's been unfaithful.

Be well.