Bruno Mars is ready to make a hit song with Sexyy Red. Mars, known for his epic collaborations, hopped on Instagram to celebrate his track with Lady Gaga, "Die With A Smile," topping the Hot 100 for the third week.

But the reality is often subtler than that—career-wise, each superstar needed something from the other. Often, one act is a bit thirstier than the other. When you encounter one of these mega-duets, you should ask yourself, Who needed this more?

Lady Gaga and Bruno Mars’ “Die With a Smile” is spending a third week at No. 1 on the Billboard Hot 100, and Mars is ready to party.

This week's Five Burning Questions looks at the first new No. 1 of 2025, with a song that's been in the top 10 for months already.