I was having a conversation with my partner earlier about a family activity planned for the morning. He does not want to do it as he doesn't want to get up in the morning. I said I thought it was important as my DS is keen and this is the only activity he is interested in and we should support him. We have been attending as a family for four weeks. My partner said that I can't expect him to feel the same way about my son as I do as he is not his biological father and never will be. We have been in a relationship for 5 years and living together for nearly a year. He couldn't understand why I was upset. My son is 12 and his biological father has never really bothered with him. I had hoped for more from my partner. I thought we were being a family. Am I wrong to be upset? He said he loves my son but will never feel for him like he would his own son. (He doesn't have any children of his own). My son is lovely. I feel devastated. Am I over reacting?