My wife has one ‘proper’ boyfriend, he works away lot so when he’s home my wife and him spend as much time together as they can. So I have very little to do with that, for all intents and purposes when they are together she is his girlfriend. She’ll let me know when he’s back and how long for and that’s about it.
She also has a regular lover which I’m a lot more involved in, we go over to see him together, I’m present while they fuck sometimes in the room sometimes in a different room. We go to clubs together, as well as more vanilla outings out for meals, drinks etc. I’m generally the one who sorts most of this out.