Thank you very much for letting us read your email here at PsychCentral. I think there are various levels and ways in which to approach this, but they all include having an honest and direct conversation with him. The first way is to explain how important this is to you and the kind of feelings that are activated and that it feels like he crosses a boundary when he does it. Secondly, I would then explain that if he wants to continue, then this should be agreeable for you to do as well. In other words let him know that if he thinks it is okay for him, then it will have to be ok for you, too. If he feels it’s the right thing for him and he’s not willing to change — then he will have to be okay with you having male friends on Facebook, visiting their homes and doing favors for them as well.
This is not a tit-for-tat but rather a reality check. You want to be in a mature relationship with an individual who thinks there’s reciprocity in your partnership, then he needs to know that what is good for him is good for you. This may be the beginning of an awakening in him, a change in how you choose to be in the relationship or a time for reevaluation.