How long should it take to orgasm?

I've had sex with two different girls, both were girlfriends who I really liked and was really attracted to, but when I had sex with them it would take a very long time for me to orgasm. It usually takes about 45-60 minutes. But when I masturbate in my own privacy, I can finish in about 10 minutes. I kind of feel bad for the girls because I think they get tired or bored after 45 minutes. Is there anything I can do to finish faster?

 

hi john i dont think you can put a time on love making ,or sex just enjoy ,might be no help to you ,just jo with the flow ,, peace , all the way ,

 

Very nice of you to be thinking of it from that perspective -- not wanting it to last too long for the girl.
Some suggestions: be more turned on prior to sex. Foreplay and what it can do in terms of the experience of having sex can go both ways -- for the guy and for the girl. Also, if you haven't orgasmed in a while. That latter one is discussed lots, but just in case you haven't tried that lately, it'd be worth a shot.
Oh, and then if there's anything you can do to enhance the physical stimulation of sex. More lube? A little lube inside a condom? Some condoms have an extra large chamber so that it gives extra stimulation to the guy. Explore those options.