After having sex with my husband, my stepfather always keeps cumming inside me...

A few years after I married my husband, I initially lived at my husband's parents' house with my stepmother, but passed away a year ago, and they live alone together. We had a happy family without any fights, but a man suddenly appeared calling himself my stepfather, as if to shake up our peace. We welcomed our father-in-law to plead for a moment, but we were worried because we had heard from our husband how bad she was. A few days later, his anxiety was confirmed, and he was pestered at the couple's affairs, and even realized that his husband was not satisfied...