"You are my love." Eres is you're or you are, una is my, and puta is love. The a in una is to be removed and the a in puta is to be changed into an o if the phrase is said to a male.
This is a translation from older Spanish languages and is considered as one of the most romantic ways to say I love you in Spanish due to it's long history.
"Mother, eres una puta!" Said the small child to his mother.
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