The decision to move on from a relationship like this should not be made impulsively, nor communicated to one's partner without really thinking it through first," clinical psychologist Nicole Beurkens, Ph. D., explains to mbg.
Or, maybe you've realized you got lost in the potential of the relationship, when the reality is quite the opposite.
If you haven't brought up concerns to your partner, that's definitely something you should do first before jumping to a breakup, according to Beurkens, for the sake of you and your partner.
She also notes it's never a bad idea to speak with others (family and friends, or a relationship professional) about your feelings and options to find clarity.