How long have you been on Celexa?

I do think that if you are able to achieve an erection it means you have decreased libido and not complete impotence.

As other users have noted it is possible to overcome this decreased libido as it is in part caused by the depression you have.

For some people sex is a very important part of their lives. If you feel like you can't live with decreased libido for a while talk to your doctor about other medications or therapy. (or both?)