my bf and i live together weve been together for 2-3months. his ex's keep texting him and i know i shouldnt think much of it but its pissing me off. one of his ex's is a childhood friend of mine (i didnt know they dated until recently) but she came over for my bday parrty and my bf was on the DJ turntables and she was touching his arm and stealing his hat and being all giggly.
thats not ok with me. i mean, i trust my bf he wont ever go back to her but,, (this is when it gets weird) we go out to the pubs to dance and my bf stayed home with his 3 underage friends. anyways,, we're dancing having a great time, then i go get a drink and head outside. she followes me and starts bitching about MY bf to ME. what. the. fuck...... she's saying "im trying to be nice" or "he wont pay attention to me" or "have you noticed how much he ignores you?" or "why are you still with him?"

by the end of the night im ready to punch her lights out, so i decided it was time for me to go home. so i head home to tell my bf what has happened. when i walk in the door he is furious at me because his ex has text him saying i was making out with a guy all night at the pubs and even has a photo oh it ((the photo is at least 2yrs old)) i tell him this and he goes to bed to calm down whilst im left downstair upset confused and tired.... what a great birthday right??

so how do i get his ex's stop interfering?