The 21st is just a day that I will always associate to when we started dating so a "happy _ months" usually comes out, but usually in a text haha.
My boyfriend and I acknowledge every month because it makes us happy.
Another thing is when they call it an anniversary when it's been 3 months. Like recently I celebrated my 1 year 7 month milestone.
I agree though, it annoys me when people call it an anniversary each month.
So if ppl wanna celebrate every day they're together, more power to em!!!! My boyfriend and I never bothered with monthly "anniversaries" I personally don't see a point.
Then again, I know some people who are only in relationships for about 3 months at a time... When my bf and I started dating 10 years ago, the first year we celebrated months.
For example, 100 days after a baby is born is celebrated.
He'd usually give me the amount of flowers for the amount of months.
And now we have 2 wedding anniversaries plus our date we got together anniversary.
He's so good to me and I love cute stuff like that.
I have always thought celebrating months was silly.