Crossed The Line With Husband's Brother

We had a family barbecue last Sunday.

I was downstairs in the pantry retrieving some things when he came in to "help" me.

He roughly turned me to face the shelves, lifted my skirt, slid my panties to the side, and entered me.

We both had to cum fast to avoid being missed. I thought he'd pull out be he released inside me.

Several things surprised me.

1. Despite the roughness, he turned me around after, kissed me deeply, and told me he loves me and we need to leave our spouses and be together. My husband hasn't kissed me like he loves me in years.

2. His dick is a lot bigger than my husband's.

3. My husband wants a second child but I don't. With his brother, I wanted him to cum inside and I won't be afraid if he gives me a baby. I guess we women really do practice instinctive "mate selection".

We've met twice this week and talked every day. Really the only remaining question is how I break the news to my husband without hurting him. His brother told his wife and is looking at apartments for us.