I think this song is about how when someone is really lonely everything hits them at once. Memories of every past lover, ex-best friend and mistake.
He says "I don't even apply these words to a specific person,
but when you're feeling this lonely the relevance worsens" meaning as he listens to this stupid love song, he's feeling horrible and useless and lonely and he's not specifically missing one person, but he's missing "affection" or love or the feeling of being in love.
I think this song is about how when someone is really lonely everything hits them at once. Memories of every past lover, ex-best friend and mistake.
He says "I don't even apply these words to a specific person, but when you're feeling this lonely the relevance worsens" meaning as he listens to this stupid love song, he's feeling horrible and useless and lonely and he's not specifically missing one person, but he's missing "affection" or love or the feeling of being in love.