Am i being naive or is this just a fantasy?

Hello. Weather it be naive,or just a fantasy,you owe it to yourself to know the truth.I am a firm believer in never let a one time chance p you by.In your case,a second time chance. More of a reason to seek the truth and get to the bottom of this. There is only one thing you can do. Meet with him as you would like to do. It would be the wiser thing to do. If he is your friend,then you should be able to talk to him and let him know what you found out.Do it subtle, do it over a friendly lunch meeting or something simple like that. If this does become a very awkward situation,and he becomes upset,you do not want it to be over dinner or at a bar or something like that.You know what I mean? There is nothing wrong with you wanting to know the the truth, especially after you just poured you heart out to him,and apparently did the same to you. Keep in mind, this engagement he is involved in just might have been due to the fact that he thought there was no hope for you two to be together. Although I do wonder why he never told you about it. Again, you owe it to your self to know the truth. There are many things I would have done differently in my life if I could go back in time, don't let this be one of those things you will be thinking about in the future. Set yourself free and seek the truth. You never know how things will turn out. Now that you both have exposed your feelings for each other , it should not be difficult,or out of place to talk about what is going to happen next. Just ask him where his heart is , is it with you or the other girl. He owes it to you to honest as well. At this point he cannot play you,for lack of a better word. He may have some heartbreaking news for you,or he may make you the happiest woman in the world.Just make sure if he says it's you ,give it a bit of time to know he is not trying to get some before he gets married. One thing is for sure,you will live on,you will grow stronnger and wiser with every new day,and everything you experience,this is just one of those learning experiences. Good luck and God bless!