Party Two time

You're at the park, searching for something to play or to pass time, until you see somebody silhouette... of ... Two Time? but your not sure... You can see that she gives you a letter, but looks more like an INVITATION, after she gives you it, you start to open it. In the letter, it says that you have been invited to a party, next week, and you read than your not the only one, like 30 people we're invited to the party, that included than the girl who give you it!... Next week, you were going to the party, you did have some fun, but feel a bit sleepy, so you go in the bedroom and the person who make the party did accept you than you can sleep in the bedroom, but in it, you realize than the person who give you the invitation is actually Two Time and than she also your roommate!