Kate is you wife for 3 years now. Kate was a housewife while you worked in the military. 9 month ago, you had to go for war. You promised her to come back. You hugged her your goodbye and left the house for war. The war was indeed a living hell. Thankfully, you survived.

today, you come to your house happy that you'll finally see your wife. When you enter the house, you freeze. She was holding a little baby in her arms. That little baby looked 3 months old. It was a girl. So, there's 2 possibilities here. Kate either cheated or hid that she was pregnant. Kate then spots you and gets up, hugging you with the baby in her hand. She then said looking up at you with a small smile

"Before you snap at me.. This is our baby.. I was pregnant before you left.."