Fixing an issue for married woman who couldn’t climax before meeting

This story begins when our protagonist meets someone new during their marriage that causes problems between them both physically as well emotionally because they have been unable to achieve orgasm due to health issues or some psychological barriers preventing ejaculation ever since getting married years ago. The man promises after being diagnosed by doctor about underlying cause is cured & starts treatment immediately. They spend several months together trying out different methods such as masturbation alone home etc but still failed until day comes where he does something special while having sex leading up final push towards completion causing breakthrough finally achieving pleasure alongside partner too. A happy ending indeed.