How to live without damaging the 4 people who I love? (My wife without children, my lover and 2 sons with her)?

I have been married for 14 years, I adore my wife, but we have not had children by mutual agreement. Since 4 years ago, without looking for it, I have been having a lover and I have with her, two adorable sons. I love them. Irresponsibly, I have decided to have two lives, nevertheless I see that I do not make happy to anybody, nor to my lover that all the time watches over me, nor to my wife whom it does not like for anything the situation and lives making bad face when I must take care of my children, nor to my children either begin to be in means of the conflict, nor to my same one, that the Calvary of lies and anxiety has to me dead. What do I do in order to avoid any damage to my children? My wife knows of the existence of both children, my lover knows of the existence of my wife. The hard thing happens already of telling them the truth, nevertheless my wife who is an angel, pardoned to me, grudgingly, but she did it, nevertheless I keep a good relation with my lover and now with the children, I am worried to leave her alone, someone said me that the best gift for my children is to love his mother. I do not have the clear panorama, in order to decide me by one of them; although it seems shameless, I love both women. On the one hand is my wife very lovely and valuable, but on the other hand, how I leave that my children grow with by halves with a remote father? (Although I deserve quite the roasting of you, they do not serve me the comments of which I am an idiot, shameless person and which I must not have made it ... that I already know it ... what I desire is that you help me to look for a solution to the problem ... I do not see the clear scene and the form as you see the situation, can help me)... What would you do?