Start with Steak Dinner this time:

We are going to play a couple of games of “Truth or Dare” in order to highlight the most fun dares not covered in other walkthroughs. The most common result is skinny dipping, which we did before. Let’s see what else we can find?

Go to the bedroom to put on a swimsuit
Wait for her in the hallway
Get in the hot tub
Suggest playing “Truth or Dare”
Truth or Dare (you have two chances, 
you must pick dare at least once to make Ariane more daring)
(Pick a question, does not matter)
(wait for her to finish answering)
Truth  or  Dare (does not matter)
None, a few, Over 10 (does not matter)
Dare her to check her mailbox...
Follow her in to the bedroom

(watch what happens)

Here is another dare not available anywhere else, but Ariane has to be at least topless to access it.

Go to the bedroom to put on a swimsuit
Wait for her in the hallway
Check out the telescope
crater a
  or sea d
  or Another planet crashed into earth…
  or 12, I believe
Get in the hot tub
Suggest playing “Truth or Dare”
Truth  or  Dare (see note above)
(Pick a question, does not matter)
Truth  or  Dare (does not matter)
Dare her to get naked
Truth  or  Dare (does not matter)
Dare her to shoot free-throws at the park naked
Follow her in to the bedroom
(the scenario will play out)
Shoot the ball or Put your towel back on
(both end slightly different)