Alright kiddo, sometimes people hurt their spines very badly which can stop parts of their body from working properly. This is called a spinal cord injury. Sometimes this can affect how people feel and think about love and touch, it can make certain areas of the body not work the way they used to. This can affect how people feel about sex, they might not want to do it anymore or need to do it differently.
But this doesn't mean that people can't have a happy life and find love and happiness with someone after a spinal cord injury, they just need to talk to their doctors and loved ones about how things might be different and what they can do to feel good and comfortable. They might need to try different positions or use different tools to make themselves or their partner feel good. The most important thing is to remember that everybody is different and what works for one person might not work for another.