I have a 7 year old son from a previous relationship, hes actually a really good kid and well behaved (mostly!) hes very loving and sensitive. My boyfriend of 4 years has gradually over the last year lost the ability to communicate nicely with my son, he calls him names constantly and belittles his behaviour, I have cried, screamed, stamped my feet, reasoned, advised all to little avail, every time they are in the same room they are arguing, and my son has started parrotting my boyfriends language and name calls him back, my boyfriend has no patience at all with my son and gets frustrated easily, he used to be so caring, I would never have let him move in (3 years ago) had i known. my son calls him dad, and my boyfriend is the only dad my son has known, but i cant live like this anymore, its affecting my health being stuck in the middle, please someone tell me what i should do