Welcome donnalee
I was born and raised a Jehovah's Witness, and spent 30 years in the organization. I can certainly attest to the fact that most JWs are indeed good-hearted, kind, and sincere individuals. I personally do not believe that JWs show kindness to "worldly" people only for alterior motives. I am not so sure that they even consciously wish to "convert" you. From what you shared, it sounds like they just happened to meet you at this occasion.
You must begin to understand the psychology and the mindset of the JW organization. Most JWs truly believe that they have the one and only true religion on earth. They truly believe that they are going to live in a paradise earth. When they observe people who they perceive to be kind, decent people, they have a desire to share the "good news" with those individuals. Sometimes, their efforts to share their faith with you is subtle, and sometimes it is more overt.
Your situation seems a little unclear. From what you shared, it sounds as if you met this man after he had already been associated with the JWs. Is this correct?
There is one thing that I do know. This situation is going to create some tension. It is obvious that your boyfriend is devout, and seriously believes that this is the "Truth". Yet, in your writing, you seem very unclear. What are your thoughts on the JW theology? Doctrines and practices?
I can tell you that there is going to be greater pressure on you to go to meetings and conventions with your boyfriend. You have some very serious decisions ahead of you. You need to seriously ask yourself where you stand with the Jehovah's Witnesses beliefs.