Crusiers handle like shit, and the silly position is rough on your back after an hour or less. Thats important because YOU WILL have to make an evasive manuver sooner or later. Far less front end grip and steering capability than a standard. I had a close call on my VRod when a cop, yes a cop, cut me off to pull out and chase a speeder. Bike was sold ASAP and I went to a Ducati Hypermotard. No good for two up though. I'd look at something along the lines of a larger adventure bike. Tiger is nice. Even a generic Japaneese standard with a good seat and backrest is far better and safer than any crusier.
My bagger handles pretty good. The old girl has a little less rake than a Vrod though. I agree those are only good for making stright runs and slow turns. Went for a tour with my Dad riding his Tiger a few years back. He couldn't shake me in the twisties, but um, well straight aways were a whole different story.
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Coffee has an excellent point. Assuming you have your MC license already, have you taken a rider safety course? If not perhaps see if she wants to join you. These classes are fun, informative, and can lower your insurance. Then you can have a potentially whole different discussion with her.