As she spends the night alone, she takes the vial Friar had given her and later will be waken up by Romeo.
May I spend the night alone?
hears guards coming
I will take this potion, and not even death will keep us apart my love.
In the present life, some people just throw the word "love" around like it means nothing while there are some people who take it by its meaning and it leaves them in a bad emotional state that can change your view of how to love anymore.