this is what I have so far.........
The nurse might act phony around Paris and woo him thinking Juliet would marry him. She might tell him all these nice things and how he’s a good man and the right one for Juliet. Even though all this is true, deep down she knows that it is not going to happen.
You are on track so far.
In ACT III we learn that the Nurse wants Juliet to be happy and she believes Romeo to be the cause of Juliet's strife. Romeo has been pronounced dead as well as named the murder of Juliet's cousin tybalt. The nurse thinks that it would be better for Juliet to move on and marry a more sensible man.
The nurse says:
Faith, here it is.
Romeo is banish'd; and all the world to nothing,
That he dares ne'er come back to challenge you;
Or, if he do, it needs must be by stealth.
Then, since the case so stands as now it doth,
I think it best you married with the county.
O, he's a lovely gentleman!
Romeo's a dishclout to him: an eagle, madam,
Hath not so green, so quick, so fair an eye
As Paris hath. Beshrew my very heart,
I think you are happy in this second match,
For it excels your first: or if it did not,
Your first is dead; or 'twere as good he were,
As living here and you no use of him.
Essentially, the Nurse might try and convince Paris that Juliet really likes him so that he might try harder to win her heart. She wants what is best for Juliet.