About Sonic and Sally's relationship through the years in his Sonic World Travel AU.
present — while they aren't an official couple yet, they have such a strong friendship that everyone knows (well except for Amy).
5 years later — even after the passing of King Nigel Acorn, Sally need to take her status more serious and Sonic losing his eyes in a battle, Sonic and Sally would always be there for each other, as any official couple should.
25/30 years later — now that they are married, have kids and are the king and queen of Acorn Archipelago, their lives have been busier than ever, but they keep it together, by being together.