No, that’s not true.
There is no such thing as a “proper” man.
People are different – men and boys too.
A man can be big or small.
A man can love men or women.
A man can have a wheelchair.
Every man is different.
It’s ok that you have a wheelchair.
There are also different types of sex.
Sexual intercourse is only one form of sex.
Sexual intercourse is when the penis is inserted into the vagina or the anus.
There are also many other ways to have sex.
What’s right is what feels good to both of you.
First find out where you like to be touched.
Tell your girlfriend or boyfriend honestly what you like.
Ask him or her what he or she likes.
Together you can make each other feel nice.