Lucy was already a successful actress, starring in the Broadway musical "Too Many Girls," while Desi was a popular bandleader in his own right. They were both married to other people at the time, but the spark between them was undeniable.
It was a rather serendipitous meeting, as Lucy was not even supposed to be there. She was a guest of the bandleader's wife, but the wife had an unexpected obligation and sent Lucy to the party alone.
While at the party, Lucy was drawn to Desi's charisma and musical talent, and they began a whirlwind romance that would eventually lead to their marriage and the creation of the iconic television show "I Love Lucy."