weakest

If your case is real, why don't simply tell him/her that you don't like him/her directly? It saves your (and his/her) time. 仲有, 又唔駛斷自己米路 (其他人見到你俾人纏住, 你都無運行la...). For presentation, you could just tell him/her that I don't like him/her because of the Christian belief, making him/her rethink carefully of the Christian belief...