Read Oyome ni Ikenai! Manga Online
Her inability to do household chores hindered her chances of marriage. So for the sake of getting married, she swore to take up classes. What she didn't expect was for her teacher to be a man... and one who's younger than her as well...
From Aerandria Scans:
She dreams what any normal woman dreams: Find a good man and get married. There's only one hitch. She has absolutely zero talent in being a housewife! Determined to overcome this problem, she enrolls in classes to learn. The only problem is her teacher turns out to be a man and a younger one at that!