ZERO contact. Don't respond to his texts, block him on your email, automatically delete any messages on Match. You can also block him on Match, I had to do that once to a guy who was sending obscene messages to me. You don't even have to read his texts, just erase them, though if you think you might need them, save them, just don't read them.
My guess is he 'fell in love' with an idea, not you. While I don't think his previous actions were necessarily needy (the one I am seeing calls or texts just about every day, but it's ok with me), these current ones are a bit much.
I think a few days of discomfort for you will make him go away. However, if he does show up at your church, let others know what is going on, don't confront him alone, but have others with you if it gets to that.