Clandestine Entanglement

How far should a brother and sister's love go? If they are step-siblings, does it really make a difference? If they have urges, should they remain just urges? When does loving someone and being in love with someone cross that line? Feelings left unsaid are feelings left alone. Feeling left alone can burn till they burst into flames. Who could love you better than your closest friend? But what if your closest friend is your closest relative?

Please pay attention to all tags. There will be subjects that trigger a person in certain situations. The characters are part of a step-family relationship. There are no blood relatives in the story. The characters will refer to each other as brother or sister. AGAIN, they are not blood-related.