Rabbi means teacher. A good analogy is that to be a state approved “teacher” you need a certificate or license of some sort. But you and I both know there is more than 1 kind of teacher.
There is also no discussion of His “wife” in the bible.
There is no discussion of ANYTHING about Jesus' life between age 12 and age 30, so that doesn't mean too much, unless you think he was over with the Lamanites.