Your opinion on my relationship?

I have been dating by boyfriend for about 6.5 months right now. I honestly think he is the one, and he is the one I want to be with forever. I don't know if its just me, or if I have some sort of Bipolar disorder but I seem to get upset/moody about something every other day it seems. Its nothing major but it just makes me over think things...as to why I am here right now on yahoo answers. I feel like we do the same things over and over again. Like everyday, is just on repeat almost. Even though we aren't doing the same activities it just seems like i'm in this circle. and today as i was thinking i remember him saying that he thinks he can't ever do anything right for me.. that hurts me deeply that he feels that way. We are suppose to be moving in with each other in the next month, is this too soon? and is our relationship healthy? I don't want this effecting our kids in the future of a divorce or anything. I just want the best for him, each and everyway.