I have some people (manly guys) who I reply to, and they'll reply right on back with good conversation, very cool.

Now girls. Fucking girls as usual, will send me multiple snapchats and then not reply when I finally do reply.

Or, they'll get upset because I "never reply."

Also, I'm not trying to game these girls, I'd just like to keep them in my zone without giving them too much validation and without taking too much away.

How do you handle these events yourself?