I am looking for the name of a manga. The manga has i think two different stories to it but one of the stories has three parts to it and it is about a girl who is from a rich family. and she is dating a guy who is from a poor family and he is going to a medical college. The guy she is dating is smart and he has sort of a boob thing. and in one chapter i know the girl has her brother grab her chest. and the other parts are where the boy and the girl go on a date together but end up going to eat dinner with the girl's brother and i think her brother's girlfriend and the brother's girlfriend has big breast and the girl's boyfriend can't stop staring at them and the girl get mad. and the other part is about the same couple execept there is a love rival for the girl. the other story is about a girl who is dating her former teacher and everytime she wants to go on a date w/ him he says he is to busy. so the girl plans a vacation and the two of them go on the trip and she gets jealous of the girl who is teaching her boyfriend how to scuba dive. and when they get back to there room she asks him if he wants to go out with her somewhere and he says that he is to busy. she gets mad leaves he finds her she tells him that she doesn't understand why they are going out. and in the end they have sex on the beach. well thats all i can remember about this manga so if you can help me figure out the name of this manga then thankx.

Ai ja Tarinai?

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