남편과 전화하는 동안 친구에게 따먹히다

My husband is very jealous and he often calls to see how I'm doing. This time he called at a very bad time. I fucked his best friend. I had to get out of this situation. His friend has such a big dick. He hammered me so hard, I got all wet. In the end, he came in my beautiful panties. How do I explain to my husband how I got cum on my panties?