With your son as young as he is, you might just have to bear it. I wish I had done that with my son's father. Looking back, it seems like such a small price to pay to have a happier child. (but then it didn't feel that way at all)
I hope you can find some peace. Things may change for you? If I can offer any advice it's acceptance. I have accepted that this is how my life is today and that's all I have to accept. I have the freedom to change course any time I want to.
I am the master of my own remaining destiny.
(((CV)))
M:63 H:53 S:41, SS:28, SS:25, SD:23 M:15 T:16
Bomb:12/17/11, "I think we should go our separate ways." H moves to his mother's house, 4/1/12 12/21/12: H moves back home, piecing