The 99 cent app lets players select a virtual girlfriend based on things like naughtiness, sense of humor, intelligence and even responsibility.
You tell the app what characteristics you like, then choose the physical attributes that you had in mind.  Once you choose your new totally-fake girlfriend, you'll have things to do with her:  you can give her a flower, take her to a romantic movie, go skating or hiking or play video games.  If junior gets the app, he'll never leave mom's basement.