Also, "sociopath"[1] is a pretty strong term for a guy who sends automated texts in a clumsy attempt to deceive his girlfriend that he's thinking about her. (I'd call him immature, and certainly shortsighted - it should be obvious how the scheme could backfire, leading to a permanent loss of trust.) And if you're not already a sociopath, it's unlike that using an app will turn you into one.

[1] https://en.wikipedia.org/wiki/Psychopathy#Sociopathy