It is impossible for a male to know if they have the virus unless warts are present. I hate it when I hear 'guy bashing' on this forum because of spreading this disease. If you don't know you have it how can you know you are spreading it. I presume since you think it is in your system you have had intimacy with other women before your present girlfriend. I guess if that is the case you have to fess up to that. If you haven't been with anyone else then who knows where this virus came from. I have a quote from one of the doctors on this site that says in regards to cheating...."If HPV is your only susipicion, it has no basis" I hope everything works out well for you.
have her go to www.ashastd.org and read up on HPV...also the Experts Forum here by Drs.Hook and Handsfield is a wealth of info on HPV and some other std's.