I have to agree with the above. Probably there is some underlying problem that has absolutely nothing to do with E.
Were there jealousy issues to begin with?
Were there sexual issues?
Were there communication issues?
Were there disagreements about life goals?
Were there pre-existing insecurity issues that came from other, past tense, relationship?
Any or all of these could be huge factors.
With all my heart I will love and not fail,
With all my soul I will fly and not fall.