It seems somethings is getting in the way. I'd suggest you see a sex therapist to discuss some options. Yes it possible for a male to have multiple orgasms like a female, but it is extremely rare. Only a few cases have been noted. It varies from man to man, from 20 minutes to 20 hours.
Oral sex can be much more focused and precise than intercourse.
The tongue is much more dextrous and slippery, making it a perfect organ for sex. If you have all that you'll like have a good and long relationship. Yes, I've known a number of paralyzed men who have had very successful sexual relationships.with women, even wives. Remember, sex doesn't occupy THAT much of our waking lives. Some guys like to have their partners put their scrotum in their mouth and gently hum.