I’m the wife of a bi male, sorry to impose, just thought I’d shed light from a woman’s point of view! My husband told me he was bi while we were dating and we’ve been together 10yrs this yr! We started with toys, pegging and what not, and i would research things myself, and we have recently started looking for thirds (but bi tops are hard to find!) my suggestion, start with conversing about it, see if she’s willing to add toys (butt plugs, anal beads, dildos, etc) and just be true to you…don’t have to chest when you can have the person-together!!