I have to say I am on this forum to learn but have gleaned a lot of information over the past handful of months.
While some of these jw's may be very nice, they are in a cult that has controlled their minds and every social aspect of their lives. They may be very nice to you but I imagine their real motive is to insure you know the 'truth'. While they may be genuine in their faith, their message is far from the truth.
I suggest reading the stories of those on this forum. Stories of broken hearts, broken families and broken lives. It has taken these people years to heal from the wounds they have expereinced as a direct result of the control the wts has on their friends and families, and even the control they once had on their own minds and lives.
If you continue a relationship with this man, you are most likely headed down the same path.
My suggestion is to remain a friendly distance. He's been baptised, he's 'in' now and shouldn't be dating a 'worldly' woman.