What you want to ask is what causes boys in love to become fat and ugly? Unhealthy diet and lack of exercise.

1. Boys will eat more high-calorie and high-fat foods or snacks and desserts during their love, which will lead to weight gain and body fat increase.

2. Boys will reduce the amount of exercise during their love, and spend their time and energy on getting along with their partners. Lack of exercise leads to muscle loss and fat increase.