Oops, it doesn't look like 'best friend couple day' is a national day..

Other days

cursing

Cursing Day
my little pony

My Little Pony Day
cuddle up

Cuddle Up Day
african immigrant and refugee hiv and hep awareness

African Immigrant And Refugee Hiv And Hep Awareness Day
stress awareness

Stress Awareness Day
gallery

Gallery Day
eat what you want

Eat What You Want Day
ruby

Ruby Day
promposal

Promposal Day
ask out your crush

Ask Out Your Crush Day