Sounds more to me like someone involved in a serious relationship with someone he loves very much and is scared because he is finally coming to terms as to just exactly what that means “all of these insurmountable tasks”.
He's out of his comfort zone with all these 'first' things he's never had to worry about before and feeling deprived by all the lasts he will never get to do again, with someone else ” all of the firsts and the definite lasts”. He's thinking back to when all he thought of was the idealized concept of the relationship 'when all on my mind was love' and realing that being in a serious relationship is not just about being in love with someone, it's a lot of work “love's not enough, in itself”.
So he's basically having a whine and feeling sorry for hisself “consequently, I've a tendency to be unhappy” and has possibly turned to drugs “all the blues and the reds get to me”. So, because he had a naive expectation about what a relationship is like, and it's not what he expected, he's worried about how it's going to last, or not “all of the doubts and the certainties that lay in store for us”.
Sounds more to me like someone involved in a serious relationship with someone he loves very much and is scared because he is finally coming to terms as to just exactly what that means “all of these insurmountable tasks”.
He's out of his comfort zone with all these 'first' things he's never had to worry about before and feeling deprived by all the lasts he will never get to do again, with someone else ” all of the firsts and the definite lasts”. He's thinking back to when all he thought of was the idealized concept of the relationship 'when all on my mind was love' and realing that being in a serious relationship is not just about being in love with someone, it's a lot of work “love's not enough, in itself”.
So he's basically having a whine and feeling sorry for hisself “consequently, I've a tendency to be unhappy” and has possibly turned to drugs “all the blues and the reds get to me”. So, because he had a naive expectation about what a relationship is like, and it's not what he expected, he's worried about how it's going to last, or not “all of the doubts and the certainties that lay in store for us”.