Heartless

I'm sky and I'm 17, I'm in the 10th grade. I've been having this problem in my life sense I was 12 and that's dating. I've dated a-lot of people in the past few years and it never felt right. It's probably because I never had feelings for that person or I just lost interest in them. People call me "heartless" for breaking up with them or a cruel for being with them even though I don't like, they say "I led them on" witch I don't know how I do it but I'm fine with it. Maybe I should just give up on the whole dating thing. It's just a waste of time to date always "right?"