It sounds like the ex-boyfriends were nobodies and she turned them into somebodies. Now that the relationships are over, they went back to their old selves, which explains the lyrics "1, 2, 3, they're gonna run back to me/Climbing over mountains and a-sailing over seas/1,2,3, they're gonna run back to me/They always wanna come but they never wanna leave". This delves into www.wikipedia.org's claim that they were needy.
It sounds like the ex-boyfriends were nobodies and she turned them into somebodies. Now that the relationships are over, they went back to their old selves, which explains the lyrics "1, 2, 3, they're gonna run back to me/Climbing over mountains and a-sailing over seas/1,2,3, they're gonna run back to me/They always wanna come but they never wanna leave". This delves into www.wikipedia.org's claim that they were needy.