Need your advice on bf and ';friend'; problem?

I've just started going out with a guy who liked me for ages(and i liked him) but he liked his best friend (sort of friend of mine) cuz he thought he had no chance with me. She rejected him and we are together now (long story). All of a sudden she's become so clingy and obsessive over him and always trying to get him away from me and invite him over to hers (she said she only sees him as a friend)(but he never goes) but it's really getting on my nerves! She's totally jealous and wants him to like her again(even when she doesn't like him that way). He says he finds her really annoying and i think he's beginning to hate her, i think she has blown her chance of him liking her ever again but I'm still worried she could ruin everything over her stupid carry on, what should i do?Need your advice on bf and ';friend'; problem?
.Nothing,absolutely nothing.l'd sit back and get a laugh at her futile antics.She's actually doing you a favor.She being spiteful and nasty.Yourself goodness and tolerance.Still don't invite her to any parties,She's still a ******

natural instinct