My wife and I are separated but are still living together. We had irreconcilable differences. I'm still living with her to help care for our son and her, because our son is only three months old. Her mental health has been incredibly bad, so I have had to care for both of them. However, even though I'm caring for her and our baby, she still has been inviting her father, who I refuse to interact with, over to our place. When she does this, I just leave, even though she begs me not to.

Often I will make food for both of us, and she will invite him over to come eat it. This is unbearable for me, but I can't do anything because I won't stop cooking for her since she's nursing our baby. When she invites her father over, I go to see my son, who has been staying with his mom. His mom and I ended up reconnecting and sleeping together a few times. I have felt very alone since the person I thought I would be with forever betrayed me.

Yesterday my son's mom found out she was pregnant. This is pretty inconvenient for her, since she is graduating next month and currently is job hunting and doing interviews. She's also not sure how she wants to proceed with me, since we never intended to be in a relationship. I just wanted to feel close to someone, and she was just blowing off steam because she was stressed about exams. Not to mention, technically I am still married.

This is such a mess. I feel like I am in quicksand. I keep making bad decisions over and over. I married someone I thought I could trust and was wrong about, and now I've knocked up a woman who probably doesn't want to be in a relationship with me when I already have a three month old. I am such an irresponsible idiot.

TL;DR: I'm technically still married, but I had sex with my son's mother because I was depressed about my ending relationship. Now I have a three month old and soon will have another baby.