For context's sake, when did you guys open your relationship, how long has he been dating other women, how many girlfriends does he have, how serious are those relationships, do you know his girlfriends, what sort of jealousy or other difficulties are you experiencing exactly, etc.?
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.