Wiser, you've been studying the JW publications with the Witnesses in your small town for about a year and a half. You must have developed friendships and some kind of relationships with the two nice people you've been involved with, and their families, and some friends. You've likely been to social events, people's homes, and so on.
Whatever you do, if these friendships are important to you, don't say anything about your religious beliefs. Just stop "studying" with them. Simply stop.
Jehovah's Witnesses have no formalities about how to treat people who stop "studying" with them.
They will continue to talk to you in the town, probably seeing you as simply "an ex study". But at least those people who have become fond of you will still happily interact with you, have a chat or coffee with you. They may even invite you into their homes, although until you are a baptized Jehovah's Witness you will not be truly accepted or often invited home.
It's up to you to decide whether you 1... will still remain a "potential study", what they call "an interested one" or 2... have become a real friend to these friends of yours. Whatever you choose, don't talk about religion. Don't even say "I don't want to talk about religion" - simply don't talk about religion if these people are important to you. Maybe concentrate on being a good friend to them, by your standards!!
If you don't want to live like this, bending your mind around what you may or may not believe according to their religion, and you have enough other friends, just forget about this stupid JW game.