Everything that you have been told so far is true, but it is also true that many, many JW youths are leading "double lives" - pretending to be on the "straight and narrow" around their parents and elders, and doing "la vita loca" when no one sees.
If you REALLY like him, you may be able to seduce him out of the cult - ultimately, you would be doing him a favor by doing so, but if this happens, it could mean some difficult times for him, as he will be shunned by the JW community if he leaves.
"What is shunning?" you ask. Shunning is when the entire religious community, including your own parents and other members of your family if they too are JWs, treat you as though you were dead -- refusing to talk with you, hang out with you, have any sort of social interaction with you. It is a VERY severe form of psychological punishment, and the fear of shunning is what keeps many JWs in the CULT, even when they know that the doctrines and dogma are all baloney. Of course, the JWs will tell you that it is all "bible based?."
The world is not going to end any day now - even though the JWs have been saying it will for more than 100 years.
The wisest thing you can do is find a fellow who is not a JW and avoid wasting your energy and emotions on those who are; but there are always exceptions to the rule, you know.