[Xentron]

Damn!
Your English is alright but you just wrote ALL THAT in just one long uninterrupted sentence.
Please explain, you're going to get married to a Japanese without even knowing Japanese beforehand?
Then she speaks English right?
Before actually seeking out a language exchange partner why not learn at least the basics of the Language.
You'd be able to do that in a few months if you studied a few hours a week.
Heck you could even reach intermediate level with about a year (or a year and a half) of self study.