The "enough" endings draw the reader away from anything of substance you might have to say in the piece. After the first stanza, it is clear the feeling of being inadequate exists. The problem is the poem rads like a giant gripe session, a laundry list of complaints, so to speak.
What the poem does not say affirmatively is what you brought to the relationship that the other person did not see. This poem could be much better with a shift in focus.