Chirpse

Noun that can refer to both the act of flirting with the intent of something more, and the mission to flirt with intent and succeed. It differs from mere flirting, which is common between friends and colleagues, because one only chirpses someone who they fancy or are attracted to.
Verb: chirpsin or chirpsing

''mate go and chirpse that well fit bird''
''he is defo on the chirpse tonight''