Does having sex change you?

I was watching this video about a disabled woman who had sex with a paid person. She claims to have not experienced a man's touch even once in her life. The video said it changed her life because it released her. Now I'm thinking will a person not be "released" if he or she will not have sex even once in their life? Is that person an incomplete person? Is it really a necessity to have sex even once? Does sex really change you?