Mark follows Sara to thank her

Mark was taken aback for a moment then he quickly followed his girlfriend.

Just catching up with her when she was leaning forward towards the mirror to check her make up. Sticking her naugthy ass out in the process.....

"Mark, you shouldn´t be in here this is a ladies room..." she said smiling viciously

"Ere, Sara.... I..." Mark tried to tell her why he had followed her here.

Sara enjoyed letting him wiggle helpless like that for another moment before she felt generous and said:

"I know that you yearn to play around with her and she is my sister.... so this must be an additional turn on I guess...." of course it was crystal clear to her that this was the case.

"Yes Sara you are right and... I want to thank you for your open-minded offer...."

Sara just smiled and congratulated herself for training him up to this level of servility.

"Well if it is that why you came here...."

She said smiling at him in the mirror and lifted the rear-end of her ultra-snug red silk mini dress...

Thus exposing her matching silky g-string and black stockings.

Mark instantly knew how to "thank" his queen and got on his knees while Sara helped him to lower her panties as low as necessary... of course both knew that they could get caught every second....

Then Mark started to worship his girlfriends...