Mayer was so busy updating his Twitter page, that he didn’t even have time to return Jennifer’s calls, according to a pal.

“Jen was fuming. There he was, telling her he didn’t have time for her and yet his page was filled with updates! Every few hours, sometimes minutes, he’d update with some stupid line,” The Sun quoted one of Jennifer’s pal, as saying.

“She was like, ‘He has time for all this Twittering, but he can’t send me a text, an email, make a call?” the pal added.

Thus, Jennifer, who was left livid with John’s attitude towards her, dumped him, the chum said.

However, John seemed unaffected, as he simply apologized and moved on.

“He didn’t deny it. He knew he was avoiding her. So when she ended things, he just said OK, and he was sorry it didn’t work out,” the pal added.