Glad to hear that things are going well! Communication and honesty are paramount, and it seems like you guys have a good handle on that. May I ask, are you asking exclusivity from Ethel, that she not be involved with anyone else while she's involved with you two?
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.