Anon or delete please.
For those of you who do not know what delayed ejaculation is:
http://en.wikipedia.org/wiki/Delayed_ejaculation
http://www.bbc.co.uk/relationships/s...hysical_causes
"Delayed ejaculation is the inability to ejaculate or persistent difficulty in achieving orgasm despite the presence of normal sexual desire and sexual stimulation. Normally a man achieves orgasm within 2-4 minutes of active thrusting during sexual intercourse,[1] whereas a man with delayed ejaculation either does not have orgasms at all or has orgasms after prolonged intercourse which might last 30-45 minutes or more. In most cases delayed ejaculation presents the condition in which the man can climax and ejaculate only during masturbation, but not during sexual intercourse."
"Between 1 to 4 % of males suffer from delayed ejaculation to some degree" but i think this references older males, whereas I am 18
I am in a very embarrassing situation.
I have had sex about 120 times with 5 different girls, and i have only ever orgasmed once whilst inside a girl (after two and a half hours of solid thrusting). Even the time when i lost my virginity, i couldn't orgasm after thrusting for over an hour.
For those of you who did read the articles i posted and are trying to deduce the reasons:
I do not masturbate because it takes two long... (although i an coax myself to orgasm)
I would describe myself as 100% straight. There is no chance of "latent homosexuality" as suggested in one of the articles.
I feel like im letting my current girlfriend down and she is getting increasingly frustrated at her inability to coax me to orgasm. I have been dumped once due to my sexual inadequacy. I really really like the girl i am with at the moment and love having sex but i cannot climax.
I dont know what to do

Has anyone else been in a similar situation? How did you resolve it?
Thank you.