In merry pin informal
Happy or cheerful; in a good mood
She's in merry pin because she has passed that test.
The boss isn't in merry pin today. Don't do anything to make him angry!
To make someone feel more confident or happy, especially when they thought that they can't achieve what they want
To smile broadly
Used to describe someone who is extremely happy
people often do irrational or foolish things when they are in love.
I and my boyfriend have decided to get married in the summer. I don't think that's wise, since we won't have enough money saved by then to set up house. But then, one cannot love and be wise.