Ah, love. Candle-lit suppers and romantic strolls on the beach, right? We've got this theme down. Unless, of course, you happen to think of love as a transaction – sort of like withdrawing money from your checking account. Or ordering carry-out. One order of love, coming up! That's precisely the level of romantic idealism that we find in "When I was One-and-Twenty." Want to find out about all the joys of love? Well, maybe you should find another love poem.
The speaker in this poem never references love, which suggests that he thinks of his "heart" as an object and not an emotion.
The speaker in this poem never references love, which means that he believes it can't really exist.