Would you cohabit with someone before marrying him/her? Or did you cohabit with someone before marrying?
I guess that's what I'm currently doing, by now though it's almost a common law marriage.
I would not, unless it was platonic.
It may sound a bit heartless but it's like with a car: test drive before you buy.
I would. Much better to find out any potential incompatibility before marriage than after.