Just do it. Kiss him slowly. Open your mouth when you are kissing and touch his lip a bit. If he doesn't pull away try maybe touching his tongue and go from there.
Also, try sliding your tongue under his and curling it back towards you as a signal inviting him to french kiss.
Guy is spelled the same in French, and pronounced 'Gee'.
a guy is 'un gars' (familiar) or 'un mec' (more slangish) in French.
guy just like in english but man is l'homme
That French guy
a tough guy is likely to be called 'un dur' (literally 'a hard one') in French.
a guy from france
French
He was French
Canadien
He is french
a guy farted
Franzose