By María Andrea Fridmann

Marc Anthony told the world Wednesday of his new girlfriend, Shannon de Lima, on his Twitter page. Among our followers' comments, many think that Marc is simply responding to Jennifer Lopez parading her new boyfriend, Casper Smart, in public -- even on set of their reality show.

In spite of that, far from waking any jealousy Jennifer may have, the pop diva actually wrote a message seemingly aimed at Marc, tweeted at around the same time her ex-husband and father of her two children announced his new romance.