Sounds like you have a few options

1. Get premarital counseling to learn to communicate better (if he says you don't need it then he's blind, dumb or afraid of a therapist calling him out on His faults) if he truly loves you he will do ANYTHING to work towards a happy marriage.

2. Ignore all the problems you have together. Get married, become soooooo much more miserable than you currently are, maybe throw a kid or two in the mix to further complicate things. Spend your days feeling extremely depressed, stuck, defeated, broken down and unloved.

3. (and this is taking a stab in the dark for sure)
Realize that you're not in love with his current self, your more than likely in love with the person he was when you first got together and he swept you off your feet. Truth be told he may never become that person again. Would you be okay married to him if things never got better? Or if they got progressively worse after marriage? Think very hard about this before you walk down that isle.

I'll leave you with this little quote "sometimes love is not enough"
In my younger years I strongly disagreed with this quote. But now I completely understand, it takes much more than mutual love to have a healthy and fulfilling relationship. It takes mutual respect, very hard work and understanding, patience, I could go on but hopefully your catching my drift. I hope you're strong enough to do something about your issues before you consider marriage. It would be a very wise decision on your part. I wish you the best none the less