Yes, it is clearly an inappropriate interest. Such a topic is private and should not be a subject of interest among people in this relationship. It violates the normal boundaries of friendship and marriage.
You could also have a serious talk with your parents or guardians about it. They can help educate your younger brother on appropriate behavior and speech. Maybe they can have a more in - depth conversation with him about respecting others and social norms.
You might also need to have an open conversation with your wife. Explain the situation to her without causing unnecessary misunderstandings. Maybe she can help handle this delicate situation. For instance, she could talk to her friend and make it clear that such behavior is not proper in the context of your relationship.
This situation might suggest that your girlfriend is very attracted to you physically. But it's important to look beyond just the physical aspect. If the relationship is only about this, it might not be sustainable. You need to build other aspects like mutual respect, understanding, and shared interests. Maybe start having deeper conversations to strengthen the emotional bond.
It's definitely not normal. Sharing stories related to private body parts in this way is not acceptable behavior. There are social and moral boundaries, and this kind of sharing violates those. It can make others uncomfortable and is not in line with proper social etiquette.
You can respond in a positive and respectful way. For example, you can show that you appreciate her attraction but also remind her that there are other aspects of you and the relationship that are important.
The following were some recommendations for romance novels about older brothers loving their younger sisters: " The Godly Doctor's Crazy Concubine: The Group Dotes on the Useless Third Miss "," The Rebirth Medicine Fragrance's First Daughter, My Brothers Kneel and Beg Me to Come Home "," It's All Out, I'm the Big Boss of Rebirth "," 90 Koi: Five Brothers Dotes on the Little Milk Bun "," The Hades Cub is Three and a Half Years Old, Seven Brothers Dotes on the Heavens "," I'm Doted by the Best Actor and Brothers in Rebirth "," The God of Men Descends from the Heavens: Four Brothers Dotes on Me Super ", and so on. These novels are all about the love of brothers for their sisters. The plots are different. I hope you will like one of them.
The following are some novels recommended by older brothers who favor younger sisters. [Author: Unknown.] [My Sister Is Definitely Not an Ordinary Person] Author: Unknown. Author: Unknown. [90 Koi: Five Brothers 'Group Pet Little Milk Group] Author: Unknown. [The Nether King's Child is Three and a Half Years Old, Seven Older Brothers Spoil Him to the Heavens] Author: Unknown. These novels were all about the love between the older brother and the younger sister, describing their interactions and growth. Please read according to your personal preferences.
Educate him about the importance of good moral values. Explain that these stories are disrespectful to others and can damage his own reputation. You can use real - life examples of people who got into trouble because of inappropriate speech.
You could look for adventure stories with heroic characters. They often have elements of grandeur and excitement that might appeal to her love for 'big' things in a more appropriate way.