It is Capulet who mostly gives this assurance. He appears to like Paris, who has good qualifications to be a husband. He is hurrying the process becasue he believes it will cheer Juliet up. Then, once he is proven wrong, his pride will not allow him to admit it; he gets mad at Juliet instead.
After Juliet refuses to marry Paris, Capulet tells her that she will marry Paris or she will no longer be welcome in his home.
Capulet tells Paris that he can marry Juliet during the party at the beginning of Romeo and Juliet, Act 1, Scene 5. He gives his blessing to Paris and expresses his desire for Juliet to marry someone.
The Nurse.
Juliet is upset and refuses to marry Paris. She tells her mother that she cannot love him and that she would rather die than marry someone she does not love.
She tells her everything about her love being Romeo.
Lady Capulet tells Juliet that she has arranged for her to marry Paris.
he tells his wife to tell Juliet that she is getting married to Paris
The nurse tells Juliet that Paris is also interested in marrying her.
She basically tells Juliet to give up on Romeo and marry Paris.
She is reluctant
Moves up the wedding day.
Juliet tells her father she's willing to marry Paris because she's desperate to avoid being disowned or forced into a worse situation. She hopes that by agreeing to the marriage, it will buy her time to figure out a way to be with Romeo instead.