So i just wanted to know if girls like to masturbate too ^.^ i know it sounds wierd stalkinghor.se i am 16 years old, and i started to do it at age of 12 i. Which brings me to my point – masturbation is really important. It's really important for all women and it's equally important for teenage girls. How many girls masturbate? Half of teenage girls masturbate regularly, and 75 percent will do so before their 18th birthdays. When do girls start to masturbate?