First, KrissiG you have my sympathies. This must be difficult for you and him.
I was in the same position, except I was the witness. I broke my darlings heart more than once telling him it was over because I couldn't keep up the lie anymore. You need to understand that him LEAVING is very difficult. If he is a baptized witness which is most likely the case, if he is guilty of fornication and has hidden it from others and the elders for an extended period of time he will most likely be disfellowshipped. Again, this is not easy. (I was DF'ed when I was 17)
Will he be kicked out if he confesses his wrong doings? IF he is kicked out, is he able to associate with me if i'm not a witness?
Most likely yes, but disfellowshipping is for the unrepentant... it depends on how well he handles the Judicial Comittee that will oversee his case. Once you are DF'ed you may associate with whomever you wish. (except of course other JW's)
Or if i am learing and trying to become a witness?
If you are trying to become a witness associating with a DF'ed person will most definetly impede your progress. You will be advised not to see him anymore.
If he is kicked out, he does plan on staying a witness and doing things right. If he is allowed back in, and i become a witness, are him and i able to be together and become married?
If he is reinstated and you are a witness there is nothing stopping you.
Basically, if you are both out it is ok... if you are both in it is ok.
But what you need to consider here are your TRUE feelings about wanting to become a JW and his TRUE feelings about wanting to go back.
Does he really want to be part of an organization that tries to dictate who he can be with? And do you want to be part of an organization that is telling him not to be with you?
Think about it carefully... once you are in it is hard to leave.
PM me if you want to talk about it further!
Good Luck!