I like this. Now this is how the old friends trope should be done. Much more realistic instead of those where the girl throws herself at him.
I’ve had similar situations too. But recently, for the first time in 11 years, I decided to talk to this old friend when we got in the same school. After an awkward moment, that person remembered me. Still the same as back then and it turns out, to that person, I was the one that changed most.
Lesson learnt: You might think someone may have changed and you feel awkward to approach them. But you might not realize you may have been the one that changed most.