In brief he left when I was 6. I found him over 30 years later and we met once. There was nothing there in terms of a connection. He had an adult stepchild who he said he had to put first. He had no bio children with his 2nd wife although he was only late 20's when he remarried.
I am one of two children attributed to him. He was very interested in my older sibling who didn't want contact but not overly interested in me.
There are no similar characteristics between me, him or my sibling apart from the one's we have from our mother.
There is a lot of secrecy around the breakdown of their marriage and I have always felt like an outsider. My mother started out all her marriages (3) already pregnant and its not within the realms of impossibility that she had lovers as her husbands were all in the Forces, so were away a lot and we lived on Forces bases.
It sounds crazy but it's just a sense I have. Happy to be proven wrong but that would take a paternity test.
Would probably never find out who my true father is if it's not him but I'd have a sense of peace just knowing that I wasn't the spawn of a dead beat narcissistic loser like him.
Id pay for the test of course.