Fundiemaker
A person who, after developing a romantic relationship with a seemingly sane member of the opposite sex, repeatedly has their new partner turn into a raving fundamentalist, often pushing them to accept their religious doctrines, and pressuring them for marriage and children.
"Dude, I can't believe this! This is the third chick I've dated that's turned into a complete fundie. What's up?"
"I told you man, you're a fundiemaker."
"I told you man, you're a fundiemaker."