How active are you as a baptist? How important are your religious beliefs to you? Do you believe the doctrines of your religion or do you simply carry the label as family tradition?
These questions are important to ask. The JW religion is different than many other Christian religions with regard to how strictly it enforces its rules - especially with regard to sexual relationships outside of marriage.
Go back and *memorize* Abaddon's post. It is dead-on accurate. Be careful about attacking the JW religion. Generally, JWs are pre-conditioned to view such attacks as coming directly from Satan. If your boyfriend buys into this idea and you attack, you may alienate him from communicating honestly with you.
Instead, try to ask sincere questions - just as you have here. Try to find out where he stands within the three scenarios Abaddon outlined.
If he does intend to continue his life as a JW, then he will likely try to keep his relationship with you a secret. Will you be able to handle this?
If you do sincerely love him and begin to think long-term, you need to be aware of the issues that lay ahead if he decides to remain a JW: How will you handle birthdays and holidays? If you had children, how would you raise them? It may seem completely premature to think about these possibilities at this point in your relationship, but it is better to start thinking about them now before your emotional attachment to this person becomes too great.
One last thing: I don't know what your or his age is, but it would be helpful to know if he is baptized or not. If he is, then all comments made in this thread apply as is. If he is not, then things change a little bit. Baptized JWs do not consider individuals who have not been baptized as JWs true members, even if such individuals call themselves JWs. Unbaptized individuals are not subject to the same level of discipline as baptized JWs, and cannot be disfellowshipped, even for fornication or adultery. However, some may treat them as disfellowshipped if such behavior becomes known.
I wish you happiness.