Take the time to find out who you are and what you want. everyone you meet in the beginning is going to be Mr. wonderful until you get to really know them or make some kind of commitment then they change. If you believe in God then know that you are not in the "truth". Jesus Christ is the truth not an organization.
If Jesus Christ is not their head, and he is not then you have other more important issues to think about like your SALVATION. Im not trying to tell you what to do because we know young folks don't like that as you have already stated. you are on this site so you know we do not agree with the jw teachings. everything they teach is not a lie but the most important thing they leave out is the deity of Christ and that should make you run.
do some research and pray to God to help you make your decisions. One of the things the jw do say that i agree with is to put God first. This is not an easy thing to do unless you know how. Reading a Bible that has not been changed like the nwt is a start. find a church to visit if you have the nerve, which may not be easy for you due to your upbringing but you will find beneficial, i know this.
define who you are and what you want before you join someone else in your life. this takes time and is well worth the efford for your LIFE.
you say you would marry tomorrow, thats kind of quick especially since you say he is 10 yrs older than you. that dosen't mean a lot but just know that marriage is not to be taken LIGHTLY. This is something you will have to live with the rest of YOUR LIFE. get some counseling before you get married. everyone should do that. you are not going to get any easy answers here i hope not because you have asked a complicated question.
we show lots of love here so know that most of us here want to see you prosper in your life.
May God Bless You!