“You said if we had been closer in age, maybe it would've been fine And that made me want to die”
Uncle Jerry quotes Shakespeare's Sonnet 116 ('Let me not to the marriage of true minds') when discussing the lyric about the age difference. He argues that if the age gap is an impediment to love, it's something she can't fix, and invokes Shakespeare's definition that true love should not be altered by circumstances. He explicitly says 'I'm quoting Shakespeare, impediment, love, no impediment to love, love is not love that alters when it alteration finds.' The implication is that Jake Gyllenhaal's excuse fails Shakespeare's definition of love.
“You should find another guiding light Guiding light But I shine so bright”
Angela & Uncle Jerry connect the 'guiding light' imagery in the outro to Shakespeare's Sonnet 116, where love is described as 'the ever-fixed mark', a star that sailors navigate by. Uncle Jerry recites the sonnet from memory and connects the North Star / guiding light imagery to the song's outro, where Taylor positions herself as a guiding light that listeners should find alternatives to, despite her brightness.