Uhh I need help

Ive had a romantic crush on multiple people over the years, however I've dated very few. But everytime I did date someone, I kinda stopped liking them?

Well, im not sure if i completely stopped liking them. Its just I didnt feel the SAME desires I felt before. And I just don't know what this means. Maybe I just haven't found the right person?​ I've dated both male and female, but it always was the same outcome.

I want a romantic relationship. At least I think i do. But im not sure. Does anyone have any ideas on what this could be? Or any suggestions on anything?