ilu2, the internet slang for "I love you too" or "i love u 2".
Bob: ilu Amy.
Amy: ilu2 Bob.
A common reply to "ILU" that is either used when one is replying satirically to whomever he is talking, or to mutually jest at the vast number of retards in AIM/forum existence.
Megan: ILU, mi pimpo!!!!1
Jack: ILU2, mi puta favorita XDD