As the title says, im a 21 year old and have a very high libido but have always been scared of the whole thing. Earlier when I used to try with a girlfriend, we couldn’t get it in due to her vaginismus, which led me to lose erections everytime i entered her. More recently i hooked up with a friend things were going well but i lost my erection as soon as I felt it slide in a little. Which i dont think even went all the way in because it didn’t feel so good when i started moving. How do i help myself relax and maintain an erection for longer than a minute without stimulation for once.