as hard as it is, he is a grown man. i am sure that you gave him sound advice and some day he will listen. the best thing you can do is enourage him and be supportive

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hubby and i waited 2 years before we wed, and it was no big deal. for us it became a joke. we would set a date, then change, set another then change. when we set the final date, several of our friends didnt believe me until i bought the dress..lol