'Corazón' means 'heart' but it is also a term of endearment which means 'honey', 'baby', etc.
You have that little skirt, everyone goes crazy
'Vos' is another way of saying 'tú'; some Spanish-speaking countries use this older form of the second person singular pronoun, such as Nicaragua, Argentina, and others. 'Perder la razón' is literally 'to lose reason' but means 'to go crazy'