PLEASE ADVICE!!!!

 Good Afternoon Teebeelicious, Please I need your advise. So, I have a "regular" fuck buddy who I'll call Hassan (for the sake of this story). Hassan is a 59 year old man and he fucks good. Since I knew him, he has been telling me of his "best friend" Mustapha, who he trusts and had always hinted that he would like us to have a threeseome. 

Not being a fan of threesomes, I wasn't keen on indulging until few days ago, when I came around for our usual "ruffle and tumble" rendezvous, that I met Mustapha. 

Mustapha is a 51 year old man and not particularly good looking. But during the 3 way play, as both men worshipped my body, Mustapha's offering was the most appealing. He is extremely skilled and spared absolutely no part of my body with his tongue offering. Even after cumming in my honey well, he rimmed me squeaky clean and left me gasping and thoroughly satisfied. 

When Hassan briefly stepped out to clean himself, Mustapha told me he would love to have a 1 on 1 session with me and I totally desired same.

Out of respect for Hassan (who seemed to be on keeping an eye on us), we didn't exchange numbers.

I'm seriously wanting another session with Mustapha but I don't know how to ask for his number without Hassan feel uncomfortable or jealous.

Can anyone help or advise?

I will be reading the comments