Elsewhere in your letter, you admit that this person hasn't revealed very much about himself or his background, even when you've asked him and that alone should be a big red flag, warning you to back away.
In other words, my advice would be to end this relationship now clearly and decisively and not let it go any further. The risks and dangers are simply too great. Your parents are wise to be concerned; they love you, and they don't want you to be misled or hurt. I know you may not agree with them right now, but later on you'll be grateful for their wisdom. The Bible says, "He who listens to a life-giving rebuke will be at home among the wise" (Proverbs 15:31).
The most important advice I can give you, however, is to commit your life to Jesus Christ and trust your future into His hands. He loves you and knows what is best for you (even more than your parents do), and He can be trusted to guide you. He knows your needs, and you can trust Him to lead you into relationships that are both healthy and honoring to God.
The Internet has changed our world often for good, but sometimes for evil. The problem isn't the technology, however; the problem is the human heart, and the fact that evil men can use the Internet to exploit others. Don't let this happen to you.