This is a tough one, Rachel. It sounds like it might irritate him if you address it again. Trying to pull myself back and look at the fact that all people are different, it might be best to leave it alone.
When you say he's a very different guy, to me, it sounds like you are accepting him the way he is. That is probably a good thing, knowing how you feel about him. It might be impossible for him to say those words to anybody(to you or his family). Somehow, I can understand this.
I know you've been waiting for this for a very long time. I believe Mike really does love you and you mean the world to him. If you can, try to believe that in your heart and leave it be for fear of causing conflict. One day, I think Mike will come around. He knows you're waiting for him but it's just too difficult for him right now.
Forgive me if I should already know this answer but, are you moving with the family when they come to Florida? What are you and Mike planning together for the move?
You know I always wish you both the very best.

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