This episode seeks to understand what is going on in our minds and bodies on the road to losing our virginity and to find out just what happens when we fall in love.

Series taking an in-depth look at sex looks at what happens to people who see their 20s as a time to play the field and explore sex with many different partners.

Series taking an in-depth look at sex explores how it changes as we move into long-term relationships and follows a couple who are expecting their first child.