"Pop quiz! Is a "starter girlfriend" a) an "unattractive" girl who serves as sex practice for a virgin/inexperienced guy, b) merely a first girlfriend, c) the first "real" girlfriend who imparts hard-earned knowledge about adult relationships, or d) all of the above. Answer: Depends who you ask!
I used to think I was a “starter girlfriend” in the manner of option C. Translation: I break horses. I offer a difficult but educational girlfriend experience: bust some balls, get a guy to open up and communicate, but the relationship itself is sacrificed on the Altar of Progress. You know, like dating a manic pixie dream girl, plus nightmares. You do your work in the trenches, but in the end, at least you can say you sent that pony out into the world ready to have a real relationship with someone else. The ultimate paying it forward.