I'm seeing a lot of people feeling unappreciated lately. I think it's one of the saddest issues a couple can face. I find it the saddest because it is so unnecessary. How difficult is it to take a moment from your busy day to tell someone they look pretty or handsome? How much time does it take to stop and give them a hug, say 'I love you' or just ask them how their day was? If your answer to any of these questions was 'Too much' then you need a fish not a girl/boyfriend.
If you don't like how he/she treats you as a girl/boyfriend what in the heck makes you think they'd treat you any better as their wife?!?! If you aren't happy as boyfriend and girlfriend you will be even more miserable as husband and wife. That marriage certificate is not a bandaid or a miracle cure for a relationship that doesn't work. Do yourself a favor and move on before you are stuck with each other because you had children. They deserve better than to have parents that are only together for their sake.