My ex fiancé and I of 7 years with a 10 month old son split 6 months ago when I found out she was seeing another person (a girl in fact). Our relationship broke down as she continued to be emotionally tied with this girl and come to terms with her sexuality. After coming to terms with the pain of what has gone on (which I’m still coming to terms with) I asked my ex that our son is not introduced to new partners too early and certainly does not overnight with them early on as it doesn’t feel right. I found out tonight that my ex has her new partner over the night whilst looking after my son and it has really upset me and made me feel angry. am I right to feel so upset and annoyed? Am I right to ask her not to do this or at least not to do this so soon? I feel I am being replaced as a father and struggling to come to terms with the change