Willingness to learn, compromise, and express needs are all excellent signs. I continue to think that this will be difficult, but not necessarily impossible. A big test will be how he reacts the first time you actually do get involved with someone else.
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.