No.
It was the lead single from their third album, released in 1986 after an 8-year recording time, Third Stage. Guitarist Tom Scholz really built an epic album - and one that didn't use synthesizers. All over the liner notes. Tom Scholz really wouldn't shut up about that.
Written in 1980, the song existed as soon as 1981 and in a leaked demo version in 1984 - which raised the anticipation for Third Stage - which ended up being a massive hit.
The song entered the US Hot 100 on September 27th, 1986, and I swear I didn't know that date when I chose this date to publish this. In the era of MTV dominance, this song reached #1 - for two weeks - without a music video (although one is rumoured to exist).
"Amanda" isn't a real person. The name fits with the flow of the song. It's also a power ballad - which isn't something Boston really did, so they were a little embarassed by the song. Nevertheless, Brad Delp belted the hell out of this song.
Brad Delp tragically took his own life in 2007 - and the band did go on after that, but it wasn't the same. This performance from 2004 shows he still had the ability to sing such a beautiful song with the proper level of emotion.