I'm lying in bed with a bad cold

I'm lying here because I'm sick, and I can't stop thinking about my ex-girlfriend, even though we broke up over 10 years ago.
We dated for about 4 years and broke up in November.
Maybe that's why I always end up thinking about her whenever November comes around lol.
I don't know why a single day feels so long, yet 10 years seem to have passed in the blink of an eye.. T_T