Haven't you guys known this dude for a very short time? Why on earth would you be thinking this far into the future with him when you barely even know him? With any new poly situation, keep it casual at first!
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.