"we are doing a lot of role play at the moment and my bf likes being teased about my lover" <-- Wow, after all that DH was validated in the "maybe he'll get into the cuckold role" hypothesis (to clarify not meant as a dig at you or the bf in ANY way, but that IS what a sexual interest in your female partner getting with a better endowed man is called)! I gotta admit I'm surprised, but that's pretty damn awesome.
I'm glad things are going well for you guys.
Me, 30ish bi female, been doing solo poly for roughly 5 years. Gia, Clay, and Pike, my partners. Davis, ex/friend/"it's complicated." Eric, Gia's husband. Bee, Gia and Eric's toddler.