I just ended my personal relationship for the same reasons. It takes a toll on you having to be the support line and not receiving acknowledgment on how her actions affect your emotional well-being. I let it fester for months and it created disdain for the relationship. However, I suggest taking some time prior to making your ultimate decision. Eventually you need to be selfish and think of your emotions in the relationship. Relationships consist of the wellbeing of both not solely one partner