Letting Her Know ?

My latest gay slut has just left my home. Normally it's difficult to have young cock chasers round, as I'm married. However my wife is in Italy at the moment, holidaying with her two sisters. No doubt hoping to have some Latin guy screw her.
We're still sexually active, and I know my wife has fucked other guys during our marriage, just as she knows I've fucked other women, including one of her sisters.
What she, and hardly anyone else I personally knows, has a clue about, is I much prefer fucking younger gay or bisexual sluts.
I'm not into making love with them, I only want to fuck them until my balls are completely empty, or they can't take my large fat cock anymore.
Usually I meet up with young men outdoors and fuck them at a few places I know. That or in each others cars.
But this past week I've been having a wonderful time screwing them at home (4 young cock sluts).
It helps I'm a fit guy with a big dick. It also helps I can fuck for a long long time, often cumming more than once.
The main reason I'm here, is its time, I think, to let my wife know I enjoy fucking guys.
I'm sure she's got some idea, but she doesn't mention anything. It certainly doesn't stop her taking my cock up her arsehole, let's put it that way.
So how do you bring up the subject, you've fucked way more guys in your life than women.