Life has scripts. Little socially-agreed plays that we enact rather than trying to figure out all our interactions from scratch every time. Many of them are very simple. There's also scripts for sex. Unfortunately, the most common script out there is terrible.
I have been with my boyfriend for a while but am shy too have sex. I just lay there without making any noises and I don't do any positions and I also make him turn off the lights so I won't see him an he won't see me. I wanna break out of my shell, he cares about me a lot but I am scared he is going to leave because there is no excitement in our sex life....