Im 27 years old and got into a relationship with an older man at the age of 22. At the time he had a 10 year old son. His son has always been rude but every laughed it off as cheeky because he was cute and the youngest in his family.

I have always done my best to care for him despite this, bought food, clothing, looked after him, took him on days out, spoilt him even though he doesn't deserve it, cooked and cleaned for him. 

But he has always been abusive toward me. He is a narcissist who pretends to be kind, caring, generous and polite when other people are watching or the camera is on but he's a devil at home. Never listens, repeats the same behaviour despite being told off/punished and is a pathological liar and schemer. One time when he was 13 I told him not leave his shoes all around the house and put his one shoe that he left downstairs in his room. I come back later to see just that one shoe thrown on the landing. I go back and fourth telling him not to do that but he continued to throw it on the landing. Finally I tell his dad who was washing up and he did nothing about it. 

More recently during the lockdown I noticed all the bowls had gone missing over a couple of weeks. His son has been told before not to leave the bowls in his bedroom because he will leave it there until mold grows. My bf asked his son where the bowls were and of course he denied even touching them. We both know he had them but he kept lying and trying to turn it on us, never believing him, always on his case, he hasn't done anything we're the crazy ones for getting angry, moaning the whole while under his breath when we're making a point, creates a huge argument between himself and my bf then walks off like we're just insane. Another few weeks go by and now all the bowls have gone so I've had enough, I go into his room and search all the draws, under the bed, cupboards etc. Low and behold all the bowls are found in various areas full of food and mold as it has been sitting there for over a month. My bf goes mad at him this time for the lying, denial and argument he built up a few weeks ago. He punishes him by taking PlayStation away and the  we go to the supermarket whilst his son is still at home. Instead of apologising and explaining himself he ramped it up even more, when we got back home he hid the tv remote in the living room and our bedroom because he didn't like being exposed and punished. Again he lies about touching them, never seen them (bedroom remote is only ever in one place and never gets misplaced), my bf threatens with a heavier punishment and 15 mins later both remotes are miraculously found and the bedroom remote was apparently found in an area it would have been impossible to be put in anyway. But of course his son had no idea how it got there he just found both remotes - more lies. Then after everything he will speak in a soft innocent voice and be nice, polite and good for a day or so to get him back on your good side before something else to happen.

These kinds of scenarios have been the going on and getting worse and more extreme over the last 5 years. But now he also walks around and talks with a sense of superiority, arrogance and denial of his own faults). He thinks he's gods gift and he has all the looks and personality that makes him better than anyone, constantly disrepecting anything I say or do for him. His dad is starting to see how horrible his son can be and how psychologically and emotionally manipulative he is but feel like theres nothing we can do. The sons mother is a heavy alcoholic, a liar, abusive when drunk and always lives in denial (like her son).

With everyone else he is good as gold and people only have praise about him because he's completely fake and lies about who he is and what he does. When he retells stories about what happened he twists the story to make himself look good.

Im so fed up, I actually hate my bf's son and don't know what to do about it. He's now 16 and I dont want to be around him but we live together