rjayaa, Yes he can. He should however first see a doctor to make sure it is safe for him. In some cases ED is a sign of another condition that should be treated.
I hope that you are still intimate with him, you can still have a lot of pleasure from oral sex or fingering while being close to him. You can also get on top and rub your vulva on his penis. I know it is not full intercourse, but it is still very pleasurable and satisfying.