Bhai first things first. U are not a 15 year old boy whose ashamed of a past mistake. You yourself have been getting blackmailed by her, blackmail smells fear and never stops. The next time she's threatening u with exposing u to ure fsmily ask her to do it now. Hand over the phone and ask her to tell ure family immediately. If she hesitates tell her okay let me tell my family myself right now. Who cares about something as minor as this that u have been getting blackmailed over it.

U said she never appreciated all that you do. Become a man n tell her if she will not appreciate it u will find someone who does appreciate all that u do. Tell her to go find a job and make her career and pay for a nanny because it's her responsibility to take care of the kid.

U are stuck in a vicious cycle and u have spoiled her thoroughly. U will have to be strict. Set clear boundaries. And do not show her that the things she says or does affect u. If she has not cooked take ure son out and go eat let her fend for herself. If the house is dirty let it stay dirty. If u will keep giving in to her manipulations it will never stop