Useful Sister

My sister 29 owed me money and was unable to pay me back, so she got her friend into bed with me. Her friend a shy girl same age my sister was perfect for me sister told me. I'm 3 years older than my sister not good in relationship with women, so I concentrate on my career instead and doing very well. Her friend still a virgin and was also not good in relationships. Let my sister arrange our dates for her, my sister convinced her friend I was a perfect match for her. I wasn't so sure but went along anyway. After 7dates I finally was able to bed her friend and messed up badly. Done everything right sexually well almost, I forgot to use a condom. Once I realized I took the easy way out, I asked her to marry me. Shocked at first, but agreed anyway, we married a month later. She didn't get pregnant from me forgetting the condom. But did after our wedding now 10 years later we've 4 children. My sister's money problems also ended after she start working for me as my assistant. One of the senior partners like her and they are now married and have 2 children themselves.