A surprise

You had planned to go after the young married couple. But then you noticed the two guys living together had brought home a couple of women they had picked up at a bar.

All four of them seemed a little drunk as they staggered up to the door.

You were close behind them as they went in. You closed the door behind you.

You then darted both guys and took the girls in to the lounge room. Where you stripped them and started probing their pussies. Both girls lay back on the floor and lifted their hips as they fucked back and met your tentacle.

You used a spare tentacle to stimulate their clitorus and to massage their breasts.

You got them both to orgasms just before you squirted lube in to their pussies. You then planted your seed and pulled out of them.

You then used their memories and the guys memories to make memories of them fucking each other. You placed them on the floor together. You realised the guys might notice they had not had sex. So the last thing you did was jerk off both guys and smeered their cum on the girls faces.

Then you left them with the instructions