This feature also comes in handy if you’d like to try mess-free sex. If you’ve ever inserted a ring-shaped, insertable birth control or a diaphragm, it is quite similar and just as easy. Think of us as your girlfriend on the other side of the bathroom door - we’ll walk you through it just like the first time you learned to use a tampon or pad. The way that FLEX sits in the vaginal canal allows for intercourse without removal.