Can anyone recommend some good romantic comedies from the 1960's?

I was just watching “Barefoot in the Park” and a few weeks ago saw “Breakfast at Tiffany’s”. (I’ve seen them often.) I really like this light style of romantic comedy of the 60s. I know that the former was based on Neil Simon’s play and the latter on Truman Capote’s novella. I suppose that Doris Day movies would be 60’s classics as well.

Can you recommend any others from this particular decade (or a bit earlier but still in that era) that are similar? Any suggestions would be appreciated.

Thank you!