Taylor Swift admits: 'I dont know how to make relationships last'

Taylor Swift may have dated some of young Hollywoods hottest heartthrobs, but that doesnt mean she knows how to hang on to themand shell be the first to admit that.

I dont know how to make relationships last, Swift told British Cosmopolitan.

Swift, whose full interview appears in the January issue of Cosmopolitan, on sale today, opened up about her love life and relationship troubles.

Ive never had a really long relationship, so I have no idea what thats like, she told the magazine. Wish me luck for the future!

Currently, the 22-year-old is rumored to be dating One Directions Harry Styles, 18. Before that, she was spending time with Connor Kennedy, also 18.

I really dont have any rules about dating when it comes to height, age, career choice, anything like that. It doesnt matter. Its really more about strength of character. When it comes to age Ive been all over the map!

Swifts ex-boyfriends include stars like John Mayer, Taylor Lautner, Cory Monteith and Jake Gyllenhaal.

And she admitted some moments from her past relationships have found their way into her song lyrics, which her exes dont always like.

The thing is, theyre just guessing that the song is about them. I put details in my songs but never first and last names, and I definitely dont include social-security numbers!