How to set healthy boundaries with someone who creeps you out, while still remaining Christ like?

This guy who I have known in my town, we have a history of texting, but he never showed any interest or made a move, and for about a year was very rude and stand offish in texts? But still would talk to me even when I presented the opportunity for him to not message me back. Anyways I eventually decide I’m tired of talking to someone who I have the driest most boring conversations with and I stop talking to him, then a couple months later he asks me out on a date and his whole demeanor has changed, he’s suddenly very nice and talkative, I said no because I was involved with someone else at the time, and I was just not interested anymore. He says okay, but he’s now joined my church, I didn’t think too much of it and I still kind of don’t, I’m happy for him that he’s been born again and has found God. But he then would ask who my boyfriend is, and asked me out on a date again a month or two later. I say no again and then he tells me he understands I am not interested in him and he gave up pursuing me and just wants to message me as friends. This was back in August, a couple weeks ago he confessed that he had feelings for me again and we got into this whole very intense conversation on how I don’t have any feelings for him at all and I’m not interested. He pours everything out and tells me I’m the girl of his dreams, the more he learns about me the more he is attracted to me, how he’s been trying to date other girls but he’s never satisfied because he compares them to me and thinks they aren’t good people. I told him I wanted to stop messaging him because this isn’t healthy, but we can still remain friends, just not friends who message every day. He agrees, and we go our separate ways. He then takes me off of his instagram, and makes a cryptic post on twitter, then deletes it. I just ignore that, then yesterday was his birthday, I told him happy birthday and he thanks me then apologizes for his behavior. I told him it’s okay and not to worry about it. He then makes another twitter post saying “if you want that girl, live a life deserving of her and she will come” and I just don’t know. I have these feelings that I don’t like when it comes to him, I don’t like how he always ignores me saying I’m not interested, how he always posts these things on his twitter. I don’t like seeing him at church. There’s a bunch more that has happened but I just wanted to state those main key points. Please help me on figuring out how to deal with boundaries and avoiding him in a Christian, Christ like way.