After being told in the last years from girls "we should stay friends" or "I'm not feeling anything more than friendship with you", this gets triggering to me. It seems to me that I have a blindspot, some things that I could be doing better to avoid it. Girls told me this even after we had sex twice or after we kissed and cuddled.
My assumption is that maybe I'm too soft physically, maybe I should be more dominant. I was also thinking to ask the last girl that told me this why specifically she feels this way, so I could improve but then I guess it's like a hunter asking a deer how to better hunt her - in other words she couldn't / wouldn't tell me much.

To give some context so you can better assess, I'm tall, fit, high income, decent social skills BUT I admit I haven't had that much experience with girls. Which only messes with my mind, because I've been working towards the things I thought would help (obtaining a high income, being fit, being social, travelling, taking care of clothes & appearance etc.) only to be told every couple of months "to stay friends".

I admit that I'm not interested in hookups, which naturally causes me to find girls that I'm interested in dating long term much less often which then in turn causes me probably to be too much into them once I do find one that I really like. But I'm aware of this and try to be really careful not to come on too strong at first, when I like a girl. It's probably delivered in a more subconcious way, or I have to be even more ambigous with my style.

I'm just wondering what the hell I should do to improve this, what should I work on and how?