No. I can't be somewhat close with a guy without wanting him to fuck me. I just hate the term "fuck buddy". It implies that only sex is involved, which isn't true. But, it's also not a bf/gf relationship. It's hard to explain.
I know what she's talking about as I had friends who were the same way. They were basically in a relationship but they just didn't want the title of being in a relationship because they felt that they would have to go by certain standards and expectiations by people around them, and psychologically they'de be tied down to that other person.