good arrangement you have , I have found that if I relax I can often find enjoyment in any situation or beauty in any place. often both people get some satisfaction out of a relationship even if it is only feeding the desire to be abused. Relationships often end when one person changes what they want. It is like having drinking buddies and becoming a tea totaller.
I feel were in a good place, although it took us years and some hard times to get here.
We have many rules, checks, and balances ensure we don't take advantage of each other, or drift from our relationship. We started with virtual no rules and it was just chaos and hurt feelings. Now, we have rules and guidelines such as how often we are allowed to play, and how many times with each partner. I have to approve her partners and she has to approve mine. It is a constant negotiation of what we are both comfortable with.
Typical conversation now..
Her: Can big bull come over again, my pussy wants him so badly?
Me: You know the rule, only 2x per customer.
Me: Can I have miss fitness over again?
Her: You really want to fuck her again don't you.
Me: Yes, she was by far the hottest fuck I ever had in my life.
Me: Remember she is why YOU wanted the rule.
Her: Just forget it then...
Me: Lets make 3 the limit.
Her: Fine, have it your way ( WITH A BIG SMILE )
If it is a major disagreement, it means we stop completely. All outside relationships end and we are back to monogamy for at least a few months, sometimes even years. We both view sex outside our relationship as a "fun perk" to our marriage and only can happen when we are in total agreement.