How can you resist such lips?

"Sara..." You grin "If you want to suck my dick who am I to stop you? Show me what you can"

She swallows hard and fall on her knees obediently. Then she starts to unbuckle your belt.

"No. No. No. It is a wrong order, lass. Remember good blowjob requires a nice sight for a man. You should go topless and then start. " you turn your attention to her brother "As for you. Don't dare to turn around. In fact go there" You point to the nearby wall " You should look at it from the side to see everything clearly"

Meanwhile Sara is doing what she told. She may have tears in her eyes but she required only a few seconds to pull her top away. Underneath she has a cute full cap bra covering her nice A-cup tits and this piece of clothing was removed almost as quickly as the top . Sara's frame is so small and delicate that modest size of her breast doesn't look disproportional at all. And those light-brown pointy nipples are begging to be teased by your mouth. Yet, it is not your tongue that will do work now.

Is it not her first experience? She frees your dick from your pants and than proceed with taking half of it in the mouth. No... Judging by the plain kind of sucking she does, it is her first time and she lacks any skills but Sara is determined to appease and do her best.

To be honest any girl with lips as soft as hers can do fine work without prior experience and you may let Sara to have some freedom. Alternatively you can give direct orders to increase your pleasure or just roughly fuck her face.

You keep looking at Adam while making the decision. His eyes are fixated on his sister's lips around another man's dick. He still looks angry rather than aroused but you suspect that now he is simply jealous.