A lot of times we end up doings things because they are the right things to do in order to keep our families together. The truth is, you need to be true to yourself. Don’t create a life you think other people want, create the life you want. You may think by staying unhappy for years you are doing everyone a favour but really you are destroying everyone with your dishonesty.
If you want to keep your family together then do that without lying. How would you feel if you found out that the loving relationship you thought your parents had was all a lie? If you don’t want to be with your partner anymore but you want to keep your family together then just sleep in separate bedrooms.
What is very important is talking about these issue with your partner and making sure the other person really understands how you feel, where you stand, where you see your lives going. If you don’t talk the pretending never ends. You only live once, try to actually enjoy your life. If you are in an abusive relationship the equation is totally different.
Ask yourself: Do I want to be with my partner? Do I love my partner? Do I want this life that we have? Am I happy? If you answer no to any of these then it is time to have a heart to heart with your partner.