This is also the case for us. My wife is a blowjob whore for several of my buddies and also my boss. She is a "stay at home wife" so it's very easy for guys to use her. She prefers a secret relationship with a couple of them. They don't connect with me anymore. Reason is that we agreed she'd only be a blowjob whore and she doesn't want me to know that she is fucking them also. I'm ok with it and secretly enjoy knowing that they fuck her too.