I have a 3 year old son. I co-parent with his dad. Me and his dad split up about a year and a half ago. He moved on instantly afterwards (with the woman he was seeing behind my back before we split up). They moved in together quickly, he got her pregnant quickly. They're engaged now. They have a baby now. It's all happy families when our son goes there. I guess I just feel horrible because I'm here on my own as a single mother, and they're all playing happy families there. Has anyone else been through this? Did you feel horrible about it? Did it get better? I'm used to it now and I've adapted to it. I've been over my ex for a long time and been in another relationship since. It's not that I'm jealous or I miss him or anything, I just wish I had what they've got.