I have been single for 10 years, mum of two girls age 25 and 22. My youngest daughter and I have been living alone for many years while my eldest was at university and we are more like best friends regularly going on holiday together. I met someone completely unexpectedly 6 months ago and am very happy but my youngest daughter is not happy with him being at the house or being included at family events. I am trying to be strong and insisted that he spent Xmas day with us but she chose to be miserable and did not join in. She asked me to tell him to go home so that we can have a normal family day as we do each year but I didn't want to which led to a massive upset. He eventually went home to avoid any further problems. Am I wrong to stick to my guns?