Online Dating Blog

ok so there’s this boy at my school. well call him “brian” hes a really nice kid, and we’ve been friends since he came to the school about 2 years ago. we were never close friends, but definitely friends. One at the end of 8th grade (im now in 10th grade), one of my friends told me he likes me. i brushed it off, thinking there was no way it was true. but several other friends started to tell me the same thing, and even showed me text messages proving it was true. But i don’t like him like that, so i didn’t do anything about it. i just laughed it off and eventually he moved on. or so i thought. fast forward to last year, about february. a good friend of mine asked me to semi, and asked me out that night. the whole night though, “brian” was acting weird. he was following us around, and kept saying how lucky my friend was (well call him christian) for asking me before anyone else got the chance. Me and “christian” dated for seven months, ending about 3 weeks ago. About a week after we broke up, “brian” asked me how me nd “christian” were. i told him we broke up, and he immediately felt guilty. But minutes later he was totally flirting with me, no matter how many times i tried to act uninterested. after a few days of him constantly iming me and calling me, he started to call me “hunny” and say he loves me. this was too far. i told him to please stop because it was making me uncomfortable. after about a week, he tricked me into going to the mall with him. he overheard me saying that me and my cousin were going to the mall, and he just happened to be there. so after hanging out with him (which was surprisingly kinda fun) i went home, and went online. he imed me, he asked me if he thought we had a chance of something between us for the future. i clearly told him no, i was not interested. but he continued to shamelessly flirt with me. im getting sick of this. i keep telling him im not interested and i don’t want to date him, and he has no chance. But he wont let it go!!
i actually feel really bad for him though, because hes always falling in love with girls like me and they’re always turning him down. i think that’s why i haven’t totally turned him down or told him off. i don’t want to hurt him like all the other girls have.
so basically im asking if you know of any way i could tell him gently that he has no chance whatsoever of us ever dating, and i just want to be friends. i have tryed just blatantly telling him but it doesn’t work…any ideas?
im sorry its so long, but i could really use your help