You cheat once, I leave you, even if I am in love. Yes, I was cheated on after 19 months, I was madly in love, she came back crying to me, I left her. She knew it was wrong, but did it anyways.

That is too big of a mistake, if I can't trust my girlfriend to make rational decisions, there will be trust issues, trust issues will break and decapitate any relationship.

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