My girlfriend’s mother turned out to be my stalker

Maybe it was because of my hatred towards my father, I swear to be always loyal in my relationship. That I wouldn't even look at another girl. I had my Sumire. My sweet, caring girlfriend. I didn't need anyone else. But then...something changed. Slowly, another person started to grow closer to me. Slowly, I started to care about another woman who wasn't in Sumire. I was drawn to her in a way I couldn't explain. And the major problem was...this person was none other than my girlfriend's mother

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A/N:- This is such a random idea. Anyway, this story doesn't contain much drama. Fluff and fluff. Read ten chapters before deciding if you like the story or not..