A little more detail to your question would've been helpful evidently :)
http://www.ashastd.org/hpv/hpv_overview.cfm has terrific info on both genital warts and cervical/anal hpv infections for more reading.
grace
It is transmitted from skin to skin contact.
Once you have HPV is takes 18-24 months for the body to clear it's self. So yes you can pass it back and forth but not really since you and partner would have it for 2+ years probably.
thank you grace. i was asking how it transmits. from what i read, the virus stays on the skin - not passed through the fluids. a second part to this question is whether or not you can pass the virus back and forth.
genital hpv is transmitted through sexual contact.
grace