Feeling Insecure in My Relationship

I know that after everything, I have no reason to worry. when were together, its almost always a more realistic fairytale. I guess like a hallmark movie to some extent but then its time to return to the weekly routine and silence. Sundays, Mondays and Tuesdays are always the busiest but they're the days I need the most reassurance. except I don't want to ask for it because I shouldn't need it. and sometimes I don't think it would actually make this feeling go away