My fiance has a female friend and also has a close relationship with her son (7yr). They dated for 6 months when the boy was just 6 months old so he helped take care of him in that time and seems to have developed a bond.
I told him before we were engaged that I did not feel happy that he was friends with his ex. He has other female friends but I feel it is different becuase they have been intimate. I know I'm am crazy jealous but I have a 6 year old son too and it drives me crazy that my fiance is closer to his Ex's son than to mine.
He agreed to stop seeing them saying he would see them less so he didn't have to say he wasn't going any more but I could see how miserable it made him (mostly because I think he feels like her son is almost like his own) so I changed my mind. Now it makes me miserable every time he goes there.
He tries to tell me they are just friends and the children could play together and they are a nice family but it doesn't change how I feel.
I don't know if I am being unreasonable or too jealous or how to handle this. Apart from this we are very good together. What to do?