On her face- of course.

Bill enjoys fucking Shay.
Shay loves him now.
Lola loves him too.

Everyone wins.

Shay makes sure that Lola gets a good view as she gets fucked...

Shay keeps cumming.

Bill soon reaches his limit.
He will reward his new lover with a gift directly from the Master Cock.

He tells her to stay there as he pulls out.
He mounts her upper body and jerks it twice, cumming on her face and tits.
She welcomes it.

"Thank you," Lola and Shay say in unison.
Bill sits down in the nearby chair and smiles.

"You two are lovely.
Today is a special day for you, Shay- you will receive my cock twice."
"Thank you, Master."
"As for you, Lola- your willingness and desire to watch will also be rewarded."
"Thank you, Master."

He tells them to stand in front of him.
They both obey.

"You will both wait for me naked on your knees in the other room by the couch.
As a show of submission, you will place your hands behind your back and hold your wrists.
Understood?"
"Yes, Master."
"Go then. I will join you when I see fit."
"Thank you, Master."

Shay helps Lola take off her remaining clothes- her skirt and blouse as they exit.

Later, Bill enters to see how well they followed his instructions.
Pretty well, as it turns out.

He smiles.
Lola needs his cock.
Shay wants it, but is more confident (a side effect of already receiving it recently).