^^^^ And I agree. So be ready for that.
Seriously: Schedule a two hour couples session with Dallas Rain and talk about it. Remember to tip well.
IMHO: You might try the swinger life together for a bit to see just how you feel about the "Open Marriage" thing.
Another option for a soft entry into the Hobby might be the Sugar Baby rout. Once a week with a known regular could be a less complicated intro into providing.