Pop star Natasha Bedingfield has starting dating Jessica Simpson's ex-husband Nick Lachey.

The pair arrived arm in arm to a party in Boston where Lachey was playing a Kiss FM concert.

Earlier in the evening the two singers had met for a romantic date at the Foundation Lounge where according to a source in The Sun they "huddled together in the VIP room."

They source continued saying "They were laughing and looking into each other's eyes in a rather romantic way. There was no public making out, but they were definitely there on a date."