Jake makes me uncomfortable. He has no boundaries, which can be dangerous and fun for some people, I suppose, but I just find him creepy. I don't think David and Patrick were going to go through with anything, I think they were just curious. They left that party pretty quickly; sure, seeing Stevie there hastened their departure, but they were leaving, anyway.
I hope Alexis and Ted can figure things out. She sure has changed over the course of this show, she was at least considering giving up her budding career to join him in the Galapagos. That's not really a tough decision, though, when fire ants are involved.