New Delhi, Dec 25 (ANI): Britney Spears has opened up about her sex life in her upcoming documentary 'I am Britney Jean'. The 32-year-old singer said that she loves sex, and thinks that it is great. However, the 'Toxic' hitmaker stated that she feels a little different about it, as she is older, and added that she sometimes feels as young as 20 and sometimes as old as 50.