it depends if he/she did good in bed. If so it can be enjoyable to remember...

7 years is a lot of memories, and only a few of them bed-related

those reminders will fade out over time, once reconnected with other events. Some connection will never fade, mostly good connections.

hope so sounds like you've been there

an ex she hardly remembers though it lasted 3 years

impressive

yep, and new music, plenty more where it came from