It'd have to be AWESOME! I know folks who have tickling, foot, and all other types of fetishes who are in relationships and their significant other has no idea. They sneak around to get their "fix" periodically. It's gotta be great when you're S.O is into what you're into......if it's just a friend who's into it, imagine what it's like if that special someone is also into it! They've gotta be the best you've ever had (shout out to Drake).