Hayden Panettiere is single again!

The "Nashville" star and boyfriend Scotty McKnight, formerly of the New York Jets, have split up, a source tells Us Weekly.

The source says that distance and different personalities played a role in the breakup, but the two remain on good terms.

The ex-"Heroes" cheerleader and McKnight had dated for over a year, just after her split from Ukranian boxer Wladimir Klitschko, whom she had been dating for two years.