These are all good questions, but I think you needn't worry too much about them. It's usually hard to say where warts were contracted, whether they're on the genitals or the
handsHand or foot spasms
Hand tremor. Most of the time there was no obvious source. Also, most of the time they don't appear elsewhere on the body, so touching doesnt seem to spread them very often (and neither does shaving, even though conventional wisdom says it does.)
It's of course important that you treat your own. If your boyfriend were to get them, they would appear on the penis where he can see them, and they don;t pose any health risk in males. As for your worry that you may have inadvertently exposed him to something, I don't think you should upset yourself over that. There's little or jo evidence that condoms prtect against the wart virus (though of course they are important to prevent transmission of herpes and HIV.) Even if he gets warts someday, there's no saying whether he got them from you or from some other partner, since so many people have or have had warts at some point.
My advice is just to get the warts taken care of and get yourself checked to be sure they're gone, including regular Pap smears and routine helth maintenance of that kind.
Best.
Dr. Rockoff