stop hitting on her / establish

[zeppy]

what's the meaning of "established" and " hitting on" in the below context? thanks !

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Rachel: Look Daddy, it's my life. Well maybe I'll just stay here with Monica.

Monica: Well, I guess we've established who's staying here with Monica...

Joey: (comforting Rachel) And hey, you need anything, you can always come to Joey. Me and Chandler live across the hall. And he's away a lot.

Monica: Joey, stop hitting on her! It's her wedding day!

 

[RonBee]

Rachel: Look Daddy, it's my life. Well maybe I'll just stay here with Monica.

Monica: Well, I guess we've established who's staying here with Monica...

The phrase "we've established" there means that it has been determined for certain. They now know for sure who is staying with Monica.

Joey: (comforting Rachel) And hey, you need anything, you can always come to Joey. Me and Chandler live across the hall. And he's away a lot.

Monica: Joey, stop hitting on her! It's her wedding day!

When Monica accuses Joey of "hitting on" Rachel she means that Joey is making an approach to Rachel with sexual intent.

 

[zeppy]

thanks for your always help !