That aside sounds just like another dating sim to me...
Humm, while on the outside it looks like a typical dating simulation but I think its features is why it's called Love Plus.
http://kotaku.com/5243198/love-plus-has-your-virtual-girlfriend-experience-covered
Players can set how they want their girlfriend to address them, and over time, she modifies to match the players' likes and dislikes. The way she speaks will even change slowly over the course of the game.
Love Plus, which is scheduled for release this summer, runs on a real time clock, and there's no actual ending to the game. The DS title is packed with over 5,000 scripts, 150 CG events and 25,000 voice expressions. See? Plus!
This game reminds me of Animal Crossing due to its real time system and dedication required. However, the solutions to pissed girlfriends can just be start over or toss her to the side; much like the neighbors you haven't visited in months. Ultimately, Love Plus keeps a safer rating while still going beyond the basic simulation but not entering the genre of Hentai games. Thumbs up for the ronery guys.