This is a really interesting thread. Sorry this may be long (I'll try my best to keep it short though)
My eldest is 15. Her "dad" and I had a fling, he was a twat and refused to have anything to do with the subsequent pregnancy as he believed I was screwing around (I was dating but not screwing around).
Fast forward 10 years, never heard from him. Had sent him a letter and then emails with photographs every year on her birthday. Never got a reply.
Never chased him for maintenance out of pride. Then I needed more money because she was going without and I, as a single parent and struggling financially, couldn't give her even the basic stuff. My parents constantly stepped in (and did so with love) but it shouldn't have been down to them and it made me so angry that he'd just walked away without a care.
Eventually I went to the CSM and asked for maintenence (I was like a bloody detective, Facebook and general online stalking to get his address!)
Found out he's happily married with a daughter a similar age to ours.
He contested the CSM request and made our daughter take a DNA test. She was 10. I had to tell her what was happening, but did so in the best way I possibly could (even came on MN asking for advice)
DNA test proved he was the father. He's paid regular maintenance ever since. However...he physically transfers the money and I don't believe his wife is aware of our daughter.
DD has always asked about him and I've been honest but fair, never brought my feelings into it.
As a 15 year old she is so angry. She suffers terribly with her mental health and I belive it is rooted in his abandoning of her. Probably also my flailing attempts at trying to help her with questions I can't answer. She can't get over the fact he demanded a DNA test. She can't get over that he still, once proved, then chose not to have a relationship with her. Of course she's found him, his daughter and wife on Facebook and she is heartbroken that he has a family and she is, in her eyes, not good enough to be part of it.
And I am here without a clue of how to guide her and support her and feeling like I'm failing her time and time again.
So I'm scouring these replies and desperately seeking reassurance that one day she will be OK, but that she won't blame me.