Conversation so far:
when did cassie me and you come out
Me & U was released on April 25, 2006
who wrote me & u
Me & U was written and produced by Ryan Leslie.
how did me & u do on the charts
Me & U reached number three on the U.S. Billboard Hot 100 in 2006. It remained in the top forty for nearly five months.
where else has me & u been successful besides the united states
Me & U has been a top five single in New Zealand, a top ten hit in the United Kingdom, Ireland, and France, and a top twenty song in Australia.

Question: what is the song about
Self-contained rewrite: what is me & u about