Not all women...my daughters, sisters, wife's friends all want me to take them for rides...but not wifey...she says "maybe if you get a Victory..." although she doesn't mean a Victory really, just a standard cruiser without faring...she doesn't like sport bikes, and I think she likes the Victory name...but I think my next bike will be a sport touring bike, or maybe a touring bike...but I can't see a Victory Vegas in my near future unless she allows me to have two bikes, then I'm all in!!
As for your situation with your significant other, she really wants to ride with you so I wouldn't discourage it...just have the talk about how to be a good passenger and let her know that you are still learning how to ride, so she has to be helpful...and don't forget the gear...I bought helmet, riding jacket, gloves & boots for my daughter (bought a little big, so that others can use them and she has growing room)
Just let her know that she needs to be as still as possible, unless she lets you know that she needs to shift around...otherwise you could go down, even when stopped...
Later.