Aerosmith frontman Steven Tyler is single again after reportedly breaking off his engagement to Erin Brady.

The rocker proposed to Brady on Christmas Day in 2011 but their relationship was rumored to be on the rocks late last year.

A spokesman for the star dismissed split rumors in October, putting the couple's problems down to the usual "trials and tribulations in a relationship", but New York Post gossip column Page Six now reports they have separated.

A source tells the publication, "It's over for good this time... They're still friendly but they're going their own ways. The engagement is off."

The couple has been dating since 2006. Tyler has been married twice before.