Taylor Swift "freaked Conor Kennedy out" by coming on too strong.

The 22-year-old singer - who has dated a host of Hollywood hunks in the past including Taylor Lautner and Jake Gyllenhaal - and the 18-year-old schoolboy started dating during the summer but Conor is said to have called things off because Taylor got too serious, too fast.

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A source told RadarOnline: "Conor's just an 18-year-old kid and wasn't ready for anything super serious. But Taylor is looking for her soulmate and it kind of freaked him out with how strong she came on."

Related: Swift 'already part' of Kennedy family

Soon after she started dating Conor - the son of Robert Kennedy Jr. and the late Mary Kennedy - Taylor bought a $4.9 million, 13-room property in Hyannis Port, Massachusetts, across the street from his grandmother Ethel Kennedy.

A realtor confirmed the purchase of the house - which was originally "way overpriced" and listed for $14 million - saying: "It's in a beautiful location and right across the street from Conor and the Kennedys.

Related: Swift to live near boyfriend's family

"It's a beautiful home. She got a nice home, paid fair price. The house was on the market for two to four years."

Taylor's purchase came just days after she introduced Conor to her parents in Nashville, Tennessee.

While they were there, the pair also enjoyed a date at a diner and onlookers said they couldn't keep their hands off each other.