Alice is not like Sarah, she isn't as sexual, if Peter tries something with her it will not work or will be interrupted by Aaron or David, if she's a virgin, the one that deserves to fuck her first is David, but I fear it may be Aaron, also sex between cousins is less taboo so it's more possible than seeing her suddenly fuck her brother.
The poll was clear, some of you can downvote all you want but most people don't like Peter and Daval will not repeat the same mistake! Peter role in this will be to corrupt Aaron so he can fuck Alice for revenge, Aaron made it clear when he said that he will take something that David cares about, that's Alice.