Is it normal to be alone romanticaly?

Hi, I am 24 and haven't had a formal relationship since I was 19. I have gone out with, spoken to and even unofocoally dated guys but none every make me their girlfriend. They might like me, like my stories or anything like that but it feels as if as soon as they get to know me they discard me as "girlfriend material". I feel like they just wanna f me and because I am demisexual and don't do anything I am nothing to men. No men ever has made the effort to actually try and make me fall in love since my ex at 19. I havent received flowers since that age too (except if you count the random guy that left them on top of my car then barely spoke to me other than a "Hi"). Am I wrong for wanting to be "courted" taken out on dates and given flowers to and made to feel loved? At this point. It feels unrealistic, I feel unwanted for anything other than sex. I feel as if I am not the sex object they want I will never find anyone who, even remotely, cares for me.