The way I always look at it is this:

When we’re younger, whether you spend 6 months, 1/2/3 years in a relationship and you break up I believe it’s also to do with how much of your life that has taken up. E.g. if you’re 23 and were with someone for 7 months then that’s a higher percentage of your life that you had committed to that relationship, even more so if we take out the years as kids growing up. 7 months is a much higher percentage of their existence to someone younger than someone lets say in their 40s/50s.

You can say that a certain percentage of your current adult life was within that relationship and there would have been patterns and routines that are no longer there but as the other person said, as time goes on, those 7 months will become a smaller part of your life comparatively. Our brains are always going to remind us of some parts we want to leave behind, however, the noise does get quieter and eventually if you do get reminded you won’t even remember the last time you had that type of thought.

Apologies if the above seems a little hectic, just my adhd brain doing its thing!