Flirt with, say (4,2)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
chat up
(Other definitions for chat up that I've seen before include "Flirt with (someone)" , "Engage (someone) in flirtatious conversation" , "Woo verbally" , "Talk flirtatiously to someone" , "Talk in romantic terms" .)