Britney Spears sparked up another romance while in rehab – this time with musician Howie Day.

Recently rehabbed Spears “fell hard” for the troubled singer-songwriter while in the facility, so hard in fact that she’s bringing him to a family wedding in June. Britney “just lights up” when she talks about Day and apparently thinks he’s “the best kisser ever.”

Howie’s troubled past has Britney’s family worried. He’s been arrested, once for locking a fan in his tour bus’ bathroom and another time for verbally abusing a flight crew while he was drunk.