When men can’t get it up, it will often make them feel self-conscious, less confident and it can seriously mess with their heads. A guy struggling will also feel guilty for not providing a good sex life for their partner, they will question themselves and they might start to feel scared that you will leave - they will be plagued with insecurities.  ED can create a number of negative emotions, so it’s important to support your man if he’s having trouble getting hard.