Name changed and I don't know if it's advice needed or just to write it all down as I don't have anyone to talk to about this. There is also much more I could say about some things growing up but they are things I've never told anyone ever. This is long and perhaps nobody will read it though anyway.
Growing up, my parents had a very difficult relationship. I think basically they married after a short time because my mum was pregnant, but really they should never have been together. The relationship hurt them both as people. I think I probably took on the peace keeper role as my mum and then my older sister were often very disdainful towards my dad, and I felt like he needed someone on his side. However, he also has a lot of flaws as a person - often self absorbed and self obsessed and I don't think he's ever really known me or wanted me to be anything other than an extension of himself. Very strong beliefs on everything that he always wants to 'convert' others to. He's also had a lot of mental health issues, which were swept under the carpet, never talked about openly and something we weren't supposed to know about, but were a sort of backdrop on things.
My parents had a fairly nasty divorce when I was a young teenager (long after they should have separated anyway). Shortly after this, my sister stopped talking to him. Their relationship had been difficult for a while and they were always having angry arguments about everything. Both very opinionated. I felt angry at my sister for a long time over this and our relationship never really recovered either - I think really though it was because I felt abandoned by her to have to deal with my dad alone from then on.
Anyway, I moved away for uni and for a while our relationship was pretty calm and 'normal' after this, albeit he was always fairly needy. Like frequent monologuing phone calls. But I still felt a sense of protectiveness towards him and I was aware that he needed me, having essentially lost my mum and sister, and all parents have their flaws. I always felt sorry for him.
Around 10 years ago however, he launched some very big news at me. I don't want to write it on here as it's very specific and I don't want it to be the focus of this. It came as a shock and I really needed time to process it, but instead found myself inundated with phone calls and letters. I remember silently sobbing down the phone on one occasion as he obliviously launched into a monologue about how wonderful all his new changes were and how fantastic everyone was being to him (having spoken to other relatives, I know this was not the case for people who actually knew him, who were all very much perturbed and concerned). I ended up sort of 'grey rocking' him because it was actually quite difficult and painful to speak to him. And I just didn't know (I still don't know) how to express any of this. I think I needed time to do a sort of grieving. He came to visit me and my now husband a handful of times after this and we were both unnerved by the change in him, total change in appearance, mannerisms and appearance. He showed only the most superficial empathy for me finding this hard and was more self absorbed than ever.
Gradually, contact dwindled down and down, although he'd occasionally call me tearfully saying how heartbroken he was by the state of our relationship, or write me lengthy letters. I've since moved to a different part of the country, started my own family, who he has nothing to do with. At Christmas we exchange cards and he sends money or presents for the children, which I text send a thanks for (I've told him he doesn't need to send things and we don't need anything). Occasionally I look him up online where he is quite an outspoken presence. He looks like a totally different person from the father I grew up with in every way - colourful hair, colourful clothes, tattooed, different outspoken beliefs in almost all areas. He has also given an interview of his life story online, which felt like a form of violation somehow to be spoken about as some kind of background figure without my consent, and also how he spoke about my mum. He doesn't know I've seen this however.
Occasionally, as in the case of this week, he sends letters. This week he writes telling me how acutely lonely he is feeling. I feel like I don't know how to respond. I feel terribly guilty for causing his sadness. Yet I feel he is now a stranger to me, and a confusing stranger to my children. I don't miss him in my life. He doesn't even call himself 'dad' at the end of his letters to me anymore anyway, so what even should our relationship be.
I feel that I remain silent because there are no words that won't cause further hurt. There is no way out of this. What is the point of trying to explain how I feel about things when the only outcome is hurt. I don't think he'd ever understand me and so much time has passed. But by not replying I am causing pain.