You are going to miss your riding partner. Good luck to both of you.
About 2 years ago, I sold my wife's nearly unused (1,000 miles) Cannondale R300. The guy bought it for his daughter going to college. I suggested that the daughter should come over and ride the bike to be sure it "fit." He looked at me sort of arrogantly and said that, "He knew all about bikes" and it would do fine. OK, I sold it to him.
I got almost the exact amount for that bike as the cost to purchase a Trek hybrid for my wife, which is what she wanted.