<human>: Could you distill the essence of the text into 1-3 sentences?

I am an 18-year-old straight female. I've never had a hint of a romantic relationship, much less dated anyone. Part of this is because I am extremely picky about a guy's personality, and also because I think you could bottle me and sell me as guy repellent. Oh well.

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I'll be going to college soon, and I'm hoping that will open up a brave new world of guys and dating. However, I have two problems:

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1) I am only interested in serious relationships. Casual relationships just don't appeal to me at all.
2) I am not having sex until I'm married. No snide comments, please. It's my own choice.

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So obviously I'd like to get these things on the table as soon as possible, so no one's time is wasted and/or I don't end up in a difficult situation. However, laying this out in detail to the poor guy who only asked me to coffee seems like a very good way to ensure he never talks to me again. What is normal timing for a "boundaries" talk?
<bot>: When is the right time to talk about boundaries to a romantic interest so you don't send him running for the hills?