been there, done that. wouldn't wish it on anyone.
in my case, i had to realize that it was MY will to marry that man and not God's will. as such, i ignored so many signs because i had it in my mind that we would get married and that every couple has arguments, etc.
i now realize that if it takes that much work to keep the relationship on the path to marriage, it is not meant for me. relationships are not meant to be easy but it should not feel like an uphill battle either.
evaluate your own relationship to see if it is just flowing naturally towards marriage or if it is something you have to work too hard for.