Myself, my partner and our two children moved in with my mother whilst we was renovating our house. This proved to be extremely difficult and we were living in a very intense environment. After six months, I couldn’t take it no longer and I instigated a separation from with my partner. He moved into his Dads house for a while, and during this time (2-3 months) he barely seen his children, no school runs, no weekends. He claimed this was because he was now living 20 miles away from them. He also claimed he was heartbroken during the separation. During the separation his family dismissed me, his Dad did not speak to me and posted indirect things on social media aimed at me and the separation (we were together almost ten years with two children and I always seen his family as my own). After four months, myself and partner had a good talk and agreed to make a go of it. The house was ready and as a family we could all move in, which we did. After a few weeks, I found out that partner had been meeting up with someone else just after under two months separated. Bare in mind the separation was still a mess. There was a photo of said other woman with his family on social media, which still remains on there 4 months after we decided to make a go of it. Turns out other woman is his best mates cousin! So there would always be a connection there. His father has still not spoken to me or apologised for the social media posts. I feel our relationship is tarnished and I can no longer see a future getting married etc. Am I unreasonable to be angry, mad and upset over this?