What is semisonic secret smile?

Semisonic's "Secret Smile" is a pop rock song released in 1999 as part of the album "Feeling Strangely Fine". The song is known for its catchy chorus and upbeat melody. The lyrics revolve around a narrator who is in love with someone who is with someone else, but despite this, they still keep secret smiles for each other. The song became a hit and reached the top 40 in several countries. It has since been covered by various artists and featured on numerous soundtracks and advertisements.