Generally speaking, if a penis measures less than three inches when erect it is classed as a micropenis. Micropenises are thought to be caused by insufficient levels of testosterone.
But the good news is other guys have come forward to say their partners really don't mind their penis being smaller than average.
Read some of the anecdotes below:
Someone else who knows just how much penis size can affect relationships and confidence is star of Unhung Hero Patrick Moote.
The actor and comedian claims his ex-girlfriend rejected his proposal of marriage because his penis was too small.
Previously speaking to HuffPost UK Lifestyle about whether society places too much importance on penis size, he said: "Yes we do. The way people talk about it makes it seem more important than it is. Porn also gives it a weight that it shouldn’t have – the size, how women react to it being so big.
"The first time I saw another man’s penis was on the internet and it was a completely unfair representation of what a standard penis actually looks like. It also gives a really skewed version of what being intimate is – the guy’s penis looks like a baby’s arm and the woman is screaming like she’s being murdered."
Moote said self-acceptance is the best way for a man with a micropenis to improve their sex life.
"What I realised is the more you embrace the insecurities the less people are likely to be able to break down," he said.
"What I realised is it takes more energy and time to change things about yourself that you can’t than it does to accept them. I’m way better about my insecurities because I can try to accept them or try to change them."