Ok, I am a 21 year old male, and for some
reason I have a lot of trouble maintaining
an erection while having sex, and even
when I do, I can never orgasm. I've had
this problem since i've become
significantly sexually active when I was
about 18. I don't really understand it
because I have no problems at all
masturbating, but it seems like when I
actually have sex, no matter how turned on
I am in the beginning, it doesn't seem to
feel right and I eventually lose the
momentum. It's just kind of embarrassing
to have to act like i'm tired or whatever,
especially at this age when I should be in
my prime. I don't know if it's a mental
problem, physical problem, or both or
whatever. Can anyone help me?