Jaxson says Lavandeira did provide him with a few story ideas for his blog, but his help never met the standards of their original deal because Lavandeira was always "too busy."
Jaxson told ABCNEWS.com that despite sending Lavandeira several more tapes, Jaxson was ultimately "left empty-handed" and confused about the status of their relationship.
While he won't confirm how intimate their relationship became, Jaxson said that the two met several times in New York and once in Los Angeles and communicated daily on the Internet.
"I fell in love with his character. I thought he was a funny, articulate individual," said Jaxson, who added that he hadn't spoken to Lavandeira since early February. "But I also saw him as a person who has everything he needs and yet is still so unhappy."
According to Lavandeira, he has become so successful at promoting new musicians that he is reportedly in negotiations with Warner Bros. Records for a lucrative deal to recruit, sign and develop new artists.
It's not clear whether Jaxson's accusations could cause Warner Bros. to back away from any future deal with Lavandeira. A spokesperson for Warner Music Group declined to comment.
Meanwhile, Jaxson, who said his true passion is television and radio, is ready to escape the blogosphere.
"I really want to do stories that matter," said Jaxson.