(well,) imagine that! spoken
Used to express a surprise or astonishment, particularly in response to the information which has been recently revealed.
He has been awarded the Nobel Prize for literature. Well, imagine that!
Her grandfather made a recovery after undergoing a tricky operation. Imagine that!
To be surprised by some sudden occurrence
To greatly surprise, shock, or confuse someone
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.