I have to say this is crazy and unfair... comunication is the key and i know u know this since u said u will all need to sit down. but it seems there is more going on. they invite there ex over and thats a NO NO right there. so something was being done behind ur back. POLY doesnt mean they can keep inviting ppl in the relationship. also when u said can one just end the relationship the answer is yes and that stinks. what state are u in? how long have u known the bf online before moving in with them?