Whoever says that he or she forget something, he or she is probably lying. People don’t forget. Exceptions obviously applies, but usually not the case.
I still remember people even thought we haven’t talked for 10+ years. Good memories. Bad memories. Your number. I do.
Maybe my memory is just good. Maybe that’ll change once I hit certain age.
Do you forget? Maybe I don’t know I forgot. How could I otherwise know?