Before I start this I just want to say I don't know the full ins and outs of the past.
My dad was married before he met my mum, she left him but they had partially (I'm assuming) adopted a child together.
When they split my dad didn't see her much again then 5 years later had my sister and me then married our mum, she was never mentioned again until a few years back, my dad saw her a couple of times with my mum, iv never met her.
Now him and my mum are separated he messaged her on fb and his ex wife and he has seen them and is now playing happy family with the adopted daughter.
He has come round today and told me this woman would like his last name!
AIBU to be confused by this? He never bothered with her growing up, made contact then dumped her again and now made contact again and she asks for his name
Iv never had a great relationship with my dad. My sister always got more than me and was treated better, he's hardly made any effort to form a relationship with my children! I grew up with the man and feel abandoned by him why doesn't she?