How do you slightly cocky but inexperienced guys flirt?

how do we us girls know you are not playing games and you actually like us?
There is this guy that is very flirty towards me but I happen to know he is very inexperienced (one school girlfriend).

He sometimes comes across a very confident and flirty and then when I flirt back a bit more aggressively he turns slightly shy and just giggles.

Guys tell me what is going on and how I should go about it as I really like him.

How do you slightly cocky but inexperienced guys flirt?
Post Opinion