Hi POY, you are very brave to come here while still in the religion. If your parents find out (I'm assuming they are in the faith) they will report you to the elders and it will be another back room talk, but that's not much really.
Dating advise- you can disagree with me if you like it's only a suggestion, but don't bother with girls in the religion! You will get tied down and have more complications when you leave, which I'm assuming will only be a matter of time from what you've said. I get the impression you really like this girl you rarely speak to. That's sweet, but does she feel the same way about the religion?
Sorry to read about your cousin. Terrible experience, and just the kind that fits the JW prejudice about leaving them. As you'll see from this forum and other resources, most people find a happy and fulfilling life without the religion.
What do you mean when you say:' I can't promise that I won't "wreck a few homes,"' are you planning on eloping with this girl?
At 17 you must be at College or University? Is there a student Counciler you could talk to about leaving the religion of your upbringing?