I am assuming you are a sub here (your other posts indicate that, apologies if this is wrong...). I take it that you are not getting an orgasm during sex because he is finishing early?

Every man has this problem. Certainly when young. I wish I had that problem now because sometimes my wife gets bored waiting for me to finish now

I suspect that because you are submissive you are pandering more to his needs in sex, even vanilla sex. The foreplay is more orientated towards getting him turned on when really he does not need that (forgive me if I am wrong here, merely hypothesising based on assumptions). I think that, certainly during Vanilla sex, your needs should be met as a priority.

In general, men can only cum once during a sexual encounter and, after that, need some time to recover (between 15 minutes for the young to 2 or 3 days for the old ) and generally it is a massive effort to get that second orgasm (to the point that, unless you are super fit and patient you'll get tired or bored before it happens). Women on the other hand can build up plateaus of orgasm sequentially - each one more intense than the last - and maintain a level of arousal far longer once one of these plateaus is reached. So, where a man will ejaculate and then go limp and sleepy, a woman is still aroused, has several levels of arousal ahead of her and is nowhere near to actually ejaculating or even being satisfied.

So, before you even think about anything that stimulates the penis, you need to start the process of getting the female system started. I am always a fan of cunnilinguis (though as JOhn Cleese famously said: Give her a kiss before you go diving for the clitoris ) and usually find it is worth taking a woman all the way through to an orgasm before she even considers doing anything for me. After all, she is still aroused and may even get another orgasm during penetration so the time taken to get him aroused is not a problem whereas waiting for a woman to get aroused when you are already aroused is not easy...

You may also want to look into methods to delay orgasm in men. These mainly involve getting aroused then pinching the penis in a particular way to make it flop again. Some of these are based on tantric methods.

However, you need to say that it is not his fault, he does not have any physical problems. He is just a normal, young, horny man. Frankly, you should probably take it as a compliment to your allure