It seems as though Natalee spent a lot of time with various guys on Aruba.
Bingo!
Natalee falls for GVC early in the trip. JvdS sees Nat with GVC... maybe the 2 Aruban stud muffins had a little contest between them?
Last night on the island, GVC wants Nat to spend it with him. GVC gets peed off when she blows him off, saying she wants to be with her friends. Basically rebuffing him. There is the argument on tape...Maybe she/he had a tiff earlier and she wanted to distance herself from him.
She heads off with friends but Nat gets a bit tipsy and lets the Aruba night get to her. JvdS is waiting in the dark and takes advantage, like any good stud muffin would do.
JvdS leaves with Nat, GVC sees this, since he is close by and is really peed now. He feels stood up and shamed by another Aruban stud muffin and waits for her to return. Time passes and he gets more peed... waiting...waiting...
GVC knows of JvdS' reputation this further stokes him. When he sees her come back with GVC, he is 10 miles high with a jealous rage and confronts Nat in the hotel. Coincidentally, what shows next on tape is lost or covered up by the dad to protect his son.
Maybe GVC's dad even helped to hide the body..???
How is this for conspiracy theories...??
BTW, since JvdS' dad was a judge and GVC' dad was involved with security, did they know each other well from past dealings?