When you do move in with him, will you still maintain to your parents that you are a virgin? Or will you have married him by then? Also, given your student loans, do you have a timeline? I would determine the timeline and decide whether it is realistic to continue feeding the family your I'm still a virgin line. If it is not realistic, then you should repost asking how to break the news to Catholic parents. I am sure many people have been there done that.