I Can't Stop Fucking My Sister

Even though I have a wife and two kids, perfect marriage, nice house, nice cars, I have been risking it all.

Sis came to live with us temporarily after her husband died. She was so sad and lonely. All I did was be a patient listener.

I guess we just crossed a boundary and became too familiar, hugging, cuddling, sharing about our relationships.

She would also overhear me fucking my wife at night. I have a big dick, I admit, and my wife is very verbal.

If you're not getting any and every night you hear the bed squeaking and another woman calling out, "Fuck me with that huge cock!" eventually you will get curious.

And that's how it started. She just put her hand on my shorts. I chubbed up. Couldn't help it. My conscious mind screamed, "But that's your sister!" My unconscious mind screamed, "That's hungry pussy that hasn't been stretched and hasn't had a cock in six months!"

You can guess the rest.

It's like, I feel bad and I don't feel bad, because my sister is just different from my wife, and she needs me right now, until she heals well enough to start dating again.

What should I do? I fear that if I end things she'll tell my wife. I fear that if I continue my wife will catch us one day. Beetween the two of them I get so much sex, but it comes at the cost of anxiety.