Yes, it will hold 2 people, but there are much better bikes on which to be a passenger. If I were going to pay for the bike knowing I would be a frequent passenger on it, I'd opt for something else - maybe a sport tourer like the Yamaha FJR1300 or the Kawasaki Concourse 1400 or, since you seem to be loaded, the new Honda VFR1200 with paddle shift and ABS brakes. Either of those bikes will haul @$$ and still seem like a cadillac to a Ninja1400 from the passenger's perspective.
But hey, maybe you are just every dude's dream girl and only care about what HE wants to ride. If that's the case, hop on back of that Ninja with him and hang on for dear life!