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American English Vocabulary from this Video

closed off - means "closed off" emotionally, or not allowing oneself to be in love

in vain- for nothing

heart melted- in this context "heart melted" implies falling in love

looking round- short form of "looking around"

heart's crippled- implies that her heart (her ability to be in love) does not work correctly

it's draining all of me- it is very hard emotionally