Confessions and Feelings

I'll admit that I'm a very emotional person, I've always been like this and I've tried to change to no avail so I'm slowly starting to accept that. However, I've always been the one confessing to my crushes and if they like me back then we sometimes date. Not once have they told me how they felt first and I ended up getting hurt and hurting them because I was and still am very honest about my feelings. I've thought to stop telling my crushes anything but I feel like my feelings overflow, like in a cliche manga, such that I can't hold my words in. Has anyone else ever felt like this as well? And also, Am I am asshole for telling someone I'm not interested in a relationship? Even though we've been friends for 3 years already, I feel like it came out of nowhere cuz I recently left a relationship with a guy who tried to change who I was. I told my friend this and he confessed as well, saying that my ex was too good for me and that he wants to cherish me. I only see him as a brother and I feel like he sees me as a tiny little bunny that he should defend and not as a girlfriend. I don't know what to do now cuz I really am not ready for another relationship but he really likes me (as he said).
╥﹏╥