I know just how you felt Terry because I am in the same situation, my parents split up when I was 18 months old, but I dont remember my dad.
I found him again when I was 28 the day after asking Jehovah where he was, so I got to have an ok relationship with him, and I made a bit of an effort when a Dub to see my Mum, but I never told her I had found him,
so there I am, seeing both of them, but being unable to even imagine that they had ever actually met each other, its just so wrong, it really rips you up inside like you wouldnt imagine unless you experienced it yourself.
To be next to my Mother and Father at the same time, it would make me feel I was part of my own family instead of a parasite on someone elses family.
I can imagine how precious that photo must be, my Mother selfishly got rid of anything to do with my real father so I didnt even know what he looked like until I met him at 28.
Allthough its nowhere near as emotionally important to me, I also have a similar desire with all my half brothers and sisters being together at one time, nearest we got was 5 of us, Ive since met another one, and know of another two that none of the others ever met.
But it will never happen.