Overview
Just because you have one deep and meaningful conversation with someone doesn't mean that a romance is in the works -- of course, you know this, but the other person doesn't. So if this guy or gal heaps some unwanted attention on you today, try to change the subject. Make it clear that you are not available -- either because you're already taken or because you're just not interested. The truth is the best solution. (Don't lead someone on just to feed your ego.)