If one of you has lower sex drive than other there's probably some problem in the relationship itself, rather than health problems... More information is needed to tell something more.
talk about it with ur partner find out whats wrong is there any medication whats ur diet and that can effect it in u both if its just the sex drive and nothin else spice it up try new things ummmm go buy a toy u or the other (i dont know if u M or F srry) many girls on there think sex in public its a huge turn on so try that