Are the people in the "Boys and Girls" video by "Blur" really happy seeming or what is their state of mind?

a href="http://search.yahoo.com/r/_ylt=A0oG7n0qY81Nn2wAaPRXNyoA;_ylu=X3oDMTE0bjY1YzVyBHNlYwNzcgRwb3MDNARjb2xvA2FjMgR2dGlkA1FJMDE4XzE5OQ--/SIG=12018mcjh/EXP=1305327498/**http%3a//www.youtube.com/watch%3fv=-BUU7ff3ntE"http://search.yahoo.com/r/_ylt=A0oG7n0qY…/a