~SPOILERS~
(Don't quite remember the order of when these scenes happened.)
"Wait" was the option I chose while he was cooking pancakes. "Wait" was also the option I chose while Dave and Sal were in the museum. "Stand Firm" when Sal was readying to punch Dean. "No" when they were having the "Do you like me more than a friend?" scene. Then just do everything that Sal likes.
Those particular scenes that I mentioned were the ones that I kept changing my answer to in every playthrough. Hopefully you'll get your hug as well!