Friend is obbsessed with her boyfriend..im gettinga annoyed!?

You sound jealous to me. The "using her" part seems like a bonus to me (like maybe you like that, because now you have something on your friend- you know something that she doesn't). You are all over the place with this question. Ur annoyed cuz she keeps talking about him, then you say "well, he's just using her" and talking about what you "heard". What makes people think that they can talk badly about your friend's relationship around YOU?? Doesn't sound like you're the best friend in the world. Just my opinion.