Welcome to our Forum. There are several questions here. I'll try to address them.
First, for better or worse, at present HPV is a "fact of life" and most people have it or will have it at some point in the future. Despite this fact, only a tiny minority of persons with HPV get the consequences of infection (primarily women and primarily cancer and pre-cancerous lesions). HPV is the most commonly acquired STD. Over 85% of sexually active women will have HPV infection at some time in their lives. The figure for men is less well studied but similar. In some HPV will cause genital warts, in others it will not cause warts but may lead to changes in PAP smears. In nearly everyone who gets HPV, warts or otherwise, the infections will resolve by themselves without therapy in 8-24 months. Little is known about the per exposure transmission of HPV but the figures listed above suggest it is relatively easily transmitted. Further, since HPV infections can occur in areas not covered by a condom, while condom use does reduce risk for infection by about 50-60%, infections can be transmitted despite condom use.
Since you have been in at least 1 previous relationship with a person known to have HPV (and if you have been in other relationships, you have likely had other exposures as well), it is more likely that you have or have had HPV. Irrespective of what she knows, if your recent partner has had other partners, the same is true for her. Given how common HPV infections are these are the one STI that we do not recommend "disclosure" of infection to sexual partners. Here is a link to a prior response that Dr. Handsfield made regarding a similar questions whihc outlines our perspective on this matter.
http://www.medhelp.org/posts/STDs/Past-HPV/show/1814012
.In your case, while it is likely you are or have been infected, I see no need for disclosure of your past exposures to future partners for these reasons. I hope my perspective e is helpful. EWH