Her first inclination is not to doubt. "Dost thou love me? I know thou wilt say "ay" and I will take thy word." But as that particular speech goes on she remembers that sometimes guys will say they love and even swear it but not mean it. Indeed, she is even more suspicious of those who swear their love: "At lover's perjuries, they say Jove laughs", "Swear not by the moon", and "Do not swear at all." She is not playing by the book; she worries that Romeo might misunderstand this but at the same time she does not want him to play by the book either. The standard procedure is for the male to protest loud and long that he loves, supported by all the holy vows of heaven, and the female is to turn a disdainful shoulder and put him off. Juliet is not playing cool (as Rosaline did) and she does not want Romeo to play the lover (as he did with Rosaline) with her. That is why she objects when he starts off "Lady, by yonder blessed moon I swear . . ."; that's the sort of speech insincere lovers make.
he saters and gazes into her eyes....love at first sight
At first, he is love sick with Rosaline, his neice, but when he attended the Capulet's ball, he instantly forgets about Rosaline and is deeply in love with Juliet, a Capulet.
he is in love with Juliet and wants to marry her
"With love's light wings" he says.
They were both Capulets. Perhaps their unattainability made them attractive to him.
Basically it was "The power of love".
No, Lord Montague had no idea that Romeo was interested in Juliet until after Romeo's death.
Yes, Romeo's friends are aware that he has fallen in love with Juliet. They learn of his feelings when they see him at the Capulet's party confessing his love for her.
He criticises Romeo for moving too quickly.
Romeo immediately forgets about his old love. This proves that he has not truly felt love before until meeting Juliet. He is also more in love with the idea of love than love itself.
romeo is in love
Juliet says, "My only love sprung from my only hate! Too early seen unknown, and known too late!"