There is so much pain caused by infidelity and marriage break ups - this site is a helpful outlet for some of that pain. Particularly for women who have just discovered or suspect they have a straying partner.
Anyway I am the product of a second relationship. My Dad was still officially married to his first wife when I was born (they had been separated for some time and he was living with my Mother when I arrived).
Fast forward 38 years and I have a very good relationship with my half siblings and we don't treat each other any differently to our full siblings (there are 7 'children' all adults now of course). This summer I was visiting one of my half sisters and saw her mother (My Dads first wife) there we always get on well and were talking about my difficulties with building up my Dads family tree. He is dead so I can't ask him any questions my Mum has had little contact with his family as they were trad Liverpool RC (Irish and Scottish) and not happy about Dads divorce and bastard offspring (not my words).
Dads first wife was able to give me a few pointers and was very helpful - and today I received a lovely six sided A4 letter with her recollections of my Grandfather, ideas on the possible age of Dads mother who died when he was only 10 and other details, addresses, names of Cousins and a few anecdotes.
I am so touched that she has gone to all this trouble for me she also sent a postcard of Liverpool from the 1960's and has given me some hope that I may be able to better understand my Fathers origins. He died 20 years ago so I find great comfort in being able to still find new information about him.
Anyway - if nothing else I hope this shows that families may be messy but they can still be great affection and respect after all the hurt and feelings of betrayal have faded - if that is what the people involved want. My Dads two wifes are not BFF's don't get me wrong but they are very civil and have a nice chat when thrown together. They love all the children involved and that seems to have kept the extended family unit going strong.