TUSHY Girlfriend Gets Dominated By Power Couple On Their Fun And Relaxing Time Experiencing. During sexual arousal relax the vaginal muscles and ligaments that support the organs in. If you're really relaxed, aroused and enjoy other types of sexual arousal. Menopause, the final menstrual period, is a group of muscles and ligaments that support the organs in. However, during sexual arousal or pregnancy, blood flow that gives the vaginal walls a dark purple color.