Should I Allow Him To

Across the road from where I work, there's a very horny thirty something married woman who loves younger cock.
I know this because these past nine months, along with a colleague of mine, we've been fucking her most lunch breaks.
She's not the best looking woman out there, but she has got a fantastic body, a beautifully large clit and an arsehole that just loves being fucked hard.
Her husband works down south during the week so she's always hungry for dick, and believe me we fuck her all ends up.
There has been a twist recently however. I'm far more well endowed than my colleague and younger.
She definitely likes sex with me more, but also enjoys being double fucked and that's where my colleague comes in, Pardon the pun.
The twist is, I'm now fucking her with her husband present, sort of. Basically he wanted his wife to live video me screwing her. As he watched from his rented flat down south, he masturbated and gave out things he wanted me to do with his wife.
He's now watched us fuck several times and each time he's mentioned when I've fucked her on a Friday, he'll be licking and sucking out my cum from her pussy and arsehole when he gets home.
Now he wants to be actually present when I'm fucking his wife, and I'm not sure how I feel about it. My colleague is most definitely not bisexual and when we were fucking her together (He's not fucked her for a couple of months now. New girlfriend) but from what he's said and inferred, I think he'd like to sexually interact with me.
I'm guessing he means to suck my cock, but again I'm not sure how I'd react. I don't want to stop fucking his wife, as she's an amazing fuck, but I'm not sure I can have a guy give me head.
We've arranged for me to visit them this coming weekend ?