Jessica Simpson, 26 and John Mayer, 28 may just be an item. A source close to Simpson declares she’s “head over heels, [and] telling friends [she's] in love.”

If the rumors are true, Simpson knows she has her father Joe on her side. “I love John Mayer,” he told PEOPLE on Tuesday. “I love his music. I love his talent.”

Simpson has been through a lot this year, and her father has much to say on that fact. Essentially, he’s concerned with her happiness and emotional well-being. “If my daughter’s happy, then I’m happy. And if she finds love, then I’m in love with the fact that she finds happiness,” Joe said.

Interestingly enough, Simpson and Mayer first met when she was still married to Nick Lachey.

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