Benvolio advises Romeo to lower the obsession that he has towards Rosaline.
Explanation
He tells him that he can do this by creating a mutual interest with other ladies.
However, Romeo does not take it seriously.
It is unfortunate to Romeo that he shares his love with a person who does not have the same feeling.
This is the reason why Benvolio suggests to him to leave Rosaline and check on other women.
However, Romeo thing Rosaline is beautiful because of his isolation.