You are
asking the truly difficult questions about HPV. Not everything is understood
about how long HPV can remain on the skin and be infectious, but your
boyfriend is a typical example of someone who has not had symptoms since his
exposure two years ago, but remains contagious. The other issue is many
people define "sexual activity" differently and you could have been infected
with another partner if you had any kind of genital contact, even just
external, with another person.
There is
no way to know 100% when you and your boyfriend are virus free. You can have
HPV testing of your cervix again in the future, but that does not
necessarily indicate virus free status lower in the vagina, or on the vulva.
Condoms
are the best, but not always effective way, to decrease risk of HPV spread.
We do know that most HPV infections resolve spontaneously within several
years, but your risk of reinfection does remain high during that time. That
is why the new HPV vaccine, Gardisil, is considered our main weapon against
high risk HPV infection, and you should discuss it with your provider.