45 and still feel like I struggle at relationships
I'm 45M UK, I was with someone 2009-2019, had twins and got married. Was a good relationship overall lasting that long, she was serious about finding someone, the chemistry was strong but not 100% which helped us get on I think as I found previous more intense relationships became rollercoasters.
Her dad died in 2018 and it was like she became a different person, full of anger and wanting to control anything, it ended in a messy divorce where she became very greedy and a nightmare to coparent with.
My next relationship lasted two years, she was younger, lovely, we got on better than my ex wife, but she had very extreme views about men (some day I would definitely hit her because I'm a man apparently) which really pushed me away, also the co-parenting struggles put me off having more kids which she wanted.
Next relationship was 3.5 years, last two years spent navigating PMDD which was utter chaos and has left me scarred and more nervous.
Then 5 months of someone with quiet BPD, obviously didn't know til the end, another scarring experience.
New relationship - first six months have been incredible, so happy, she told me she had high functioning Asperger's early on, never seemed an issue. Her parents are awful and still treat her like a child and expect her to do as they say which interfered with our plans and caused some issues. In hindsight I think I reacted a bit strongly to this, bullying is a trigger for me. It's now got in a bit of a mess and with her Asperger's she's struggling. I think we have a way forward, but I have noticed two things. One, only women with some sort of underlying intense mental health condition seem to really excite me, more typical women bore me. Two, I seem demanding in relationships and it becomes a problem at times, I want all the romance, the bedroom stuff, all the dreams, and I'm sensitive if this doesn't work out. Am I unusual? How do I become easier to be with?
Tl;Dr how do I find more happiness in a relationship and stop being so demanding?