Claude and Spring Day

everytime i saw Claude i think abt Spring Day, especially when he is showing Athy his memories with Diana. He often said he already forgotten her (or smt like that), but actually he miss her and still cant let her go (or that's what i think).
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There is this part of the song:
"yeah i hate you
although you left
there hasn't been a day that i forgotten you
honestly i miss you
but now i'll erase you
because that will hurt less than resenting you"
also this:
"i say that im gonna erase you
but actually, i still cant let you go"
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i always wonder if thats what Claude think all this time.
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This is just my opinion
PS: This song is really amazing everyone T^T