How often is normal?

Typically I like it at least once a day, often twice a day. For me, when I have someone, that's at least 10 to 15 times a week.
If he's young and healthy, usually that should get him to do it at least 5-10 times a week, from what I've seen.
Maybe if he exercises, eats better, and takes his vitamins, he'll want it more often. ;-)

What is wrong with him? Either you wear him out because he's a pansy or he's seeing someone else too. I don't know any guy who would turn a woman down like that.

Is he tired or just can't get it back up? For me, I give my girlfriend some oral and that gets me going again.

Sexual appetite varies from individual to individual. Talk to him about this, there may be other outside things that are interfering with his desire.

Sex and money are strange in that they only really matter when you're not getting any. I suggest you figure out a way to take care of yourself. Maybe he won't like the competition and he'll step up and do his manly duty. Maybe it will turn him on and he will want to get involved. Whatever happens though you will be taken care of.

There is really no answer to how often is normal; it varies by day, month, year! :D
Honestly, there have been times I spent half a day having sex with my gf, while other days,we just want a 5 min quickie. Variation is great also...beats the routine....
have you asked him why he doesn't want to do it again? Is he completely exhausted? Sometimes that could be the cause, but given that he is young, he should be going at it a bit more often. Also, maybe try some loud moans to get him aroused! :)

Try asking him to give you oral when you want it again for the 2nd or third time a day, and if that fails call me I will help you ....lol

Typically we are loaded for one session. if you want him to pleasure you more than once, tell him to stop masturbating for a few days and see if that helps. Or tell him to start working out more, so as to boost his testosterone levels there buy increasing his sex drive. Good luck!!