I'm a married guy, and I've gotta say that there're only two women in the world who've managed to get me off with a blow job. My wife, and my ex wife. Now this is not to say that I do not enjoy a good hummer, I love em (what guy doesn't) but they're too intense for me to climax most of the time. On the occassions (rare as they are) that my wife has managed to make me lose my...uh....mind, there was always somethig I was doing to her, like toying her with a dildo or vibe, maybe your guy needs something for hime to do while you're doing your thing!

My experience with my bf was the same.  The first many times i went down on him he came within the first 5 minutes, guaranteed.

Then as time went on, i was there for about 20 mins and my mouth would be SO sore!  I felt like i was doing the wrong thing and all he kept telling me was "that was really good, honestly, believe me" even though i didn't..

One night however, it took about 15 minutes, and i was just about to give up, when i tried something "new".  I held my index finger and thumb around the base of his penis rather firm, and kept giving him head and using my other hand to stimulate both the shaft, testi's and perinium (between the anus and the testi's).  Keeping the grip rather firm, after about 5 minutes or so, i let go of the base and went for it all and the rush that was "banked up" went right through him and before you know it, he came.  But you HAVE to keep up with what starts to make him throb and DO NOT stop or else he'll lose his climax.  

It didn't do it ALL the time (as the previous posts explain), and we broke up not long after (unfortunately) but you could also try holding 'the ring' for longer. But that's what i found that REALLY worked, especially when we weren't able to have sex for a while   Your own personal penis ring (that no doubt feels A LOT better!)

HngLkAMouse got it in one senteNe :
"Generally, in any new relationship... I found that the first week up to the first few months can be "heightened" due to the excitement and 'new-ness' of the relationship... then as it settles down (3-9 Months into it) you see a return to normalcy."

Its just like that im sorry, n it could well be for u b/f that ur the first blowjob he has gotten and the new sensation has brought him over the edge very quickly. U just need to know u are not doing anything wrong. if your getting tired try doing other things Eg blow, then hand then let him be inside of you, just mix it around and keep him guessing

Well... it takes me between 5-Minutes to 30-Minutes to "finish" depending on MANY things... some of which I have no-idea. Some days it's just "right there" and I'm done in 5-10 minutes... Some days, she goes for 20-30 Minutes and has to resort to other means of "completing the job".

It's hard to say. I remember one night she was too-tired for sex, but I needed a little "help" falling asleep... so she offered to use her hand. (Very nice of her) To keep a long story short... it took almost 45-minutes for me to "finish" and that was with ME finally taking-over while she was there for "moral support".

It's tough to say.

Generally, in any new relationship... I found that the first week up to the first few months can be "heightened" due to the excitement and 'new-ness' of the relationship... then as it settles down (3-9 Months into it) you see a return to normalcy.

What you're experiencing is NOTHING out of the ordinary and it's NOTHING that you're doing wrong... it really CAN take that much time.