Hi,thank you for using health care magic.
I can understand your concern.
First time sexual activity produce performance anxiety in many males and that can also lead to
premature ejaculation. There is nothing wrong from your side in this situation but you can certainly help him out. There are techniques called squeeze technique and start -stop technique . This both technique help over the time and give more control over ejaculation in male.
Many times using condoms and doing
masturbation just before actual sexual activity also help in many men.
If above things does not help then treatment of choice is drugs like sertraline, Peroxatine,
clomipramine etc. This medicine primarily affect the serotonin system of brain. This medicines are used for treatment of depression and premature ejaculation. Clomipramine can be used as and when required also.
Consult psychiatrist if needed, he/she will be able to help your partner in this condition through medicines as well as
behavioral therapy.
I hope this will help you.
Regards.