Having worked on a dating app startup with a 2m seed (it's since pivoted to a brewery run by active gang members), I can say the problem of dating is looked at horribly wrong. People assume dating is about finding the person "most compatible" with you. Compatibility is an illusion. Most people tend to date until they have an idea of "what they don't want". Once they know and they find someone who checks the boxes, th…
At times I was lonely and miserable and wanted somebody in my life badly and in those times nobody ever was even remotely interested in me. The moment I did well and / or was also in a relationship it seemed like potential partners were all over me (it seemed almost unfair). Point I'm trying to make is people usually "date" for the wrong reasons. The moment they're in to find somebody to "complete themselves" they create a an unconscious demand on their partner which is the pre-programmed disaster that it will turn out to be. The moment I notice my date is "actively looking" I run.
To me the whole concepts of "dating" is very sterile. It's not in my culture maybe to have a formal process where you sniff each other with prepared questions and then after 3 years you check "where this is going". What has worked well for me is not ever to look for partners actively and the trick was always "the less I look the more opportunities I find" (strange that).
I think why most relationships don't last is because we literally suffocate everything that is good out of it. Usually it happens slowly so we don't notice (or tell ourselves things will get better - they usually don't). For most people it's just a way to build many small co-dependencies into a neurotic prison which they can be unhappy in but tell themselves "at least I feel secure". Some even think it's their mission to fix their partner (and all they do is set themselves up for pain).
A timeless classic on the psychology of relationships: Scott Peck "The Road less Traveled" https://en.wikipedia.org/wiki/M._Scott_Peck#The_Road_Less_Tr... (one of my top 10 fav books I ever read (and I read a lot).
edit: my experience working for a dating startup called Friendscout24 (a total horror show) https://news.ycombinator.com/item?id=18713837