Welcome to CAF - don’t EVER worry about repeating a thread - we will gladly argue about the same things for months. in a good hearted way - LOL
OK, yes it is possible to get married in the Church with dispensation from the bishop if your bf/fiance (whichever term you prefer - I do not want to offend) agrees to not be an impediment on you practicing the Catholic faith and agrees to raise children in the Catholic faith. However, all that being said even though it would be a valid marriage for you - it would not be a Sacramental one.
Now, here is the complicated part. Has your bf/fiance been married before? If this is the case then he would need a declaration of nullity as marriages are considered valid unless otherwise challenged and declared invalid. If he cannot receive one than he would not be free to marry you or anyone else in the Catholic Church. You as a practicing Catholic would not be free to date him.
My recommendation - marriage prep takes time. If he is interested in the Church- ask him to start RCIA.He is not committing to the Sacraments - he is getting more information. It is a process. If at the end of the year he decides that he wants the Sacraments - better for you both. If not and you still move forward with your marriage - he will need that information to help you raise children. If not and you don’t marry - it saved you both much heartache.
God bless you and again welcome to CAF.