Okay thanks for the additional information.
It sounds like what happened is that you are older than he is, which surprised him. You are also probably much more mature emotionally and most importantly you two are in different life stages. Even though you said you would wait for him to have a family, it's possible that he would not be ready for such a step for a long, long time.
I don't think that things would have gone differently had you acted otherwise, or not tried to talk to him. Why do I say that...because the way that he has handled this by just ignoring you completely and pulling away without any kind of discussion, etc. does show that he does not have good communication skills. He is immature in this area and so I believe you would have had issues going forward about discussing and understanding, compromise etc.
So don't second guess yourself or feel that you did something wrong here. You didn't do anything wrong.
If he continues to just ignore you, I would stop contacting him altogether and just let him be. Also, in the future it will be helpful when you first meet someone that you are dating to talk about what your ages are, etc. so there are no surprises down the road.
In summary, you did nothing wrong in trying to talk about the relationship and he really should have been more open with you, rather than just ignoring you. Please click ACCEPT so I'm credited for my help today. And feel free to continue the discussion with me, even after clicking ACCEPT. Thank you.