This has been bothering me for over 13 years now. I've never been able to find any variation of the lyrics of the original song, but the BRIDGE in the acoustic version absolutely has different lyrics. Every lyrics website seems to simply re-list the original lyrics for the acoustic version. Lazy!
Below is the acoustic version, the bridge begins at 2:55 I believe. (Should be very easy to find the original to compare it to, if you need to listen).