The Ignored Reality 

Call water as water.
And poison as poison.

Many people unfortunately, even knowing that their cousins are non mahrams, treat them as brothers/sisters, and so hang out with them, talk as though they are your brother/sister from the same mother, which is completely wrong.
The Islamic guidelines which is applied while interacting with a non mahram applies to interacting with the cousins as well.
>Talk only when necessary.
> Minimize the greeting and the general conversation to only what is necessary.

The Shariah Hijab which applies to us when being in front of Non mahrams applies to cousins as well.

Call your cousin as cousin.
A Non Mahram a Non Mahram
And a Brother/sister as a brother/sister.

And follow what the Qura’an and Sunnah say not what your culture says!

AN.

Common Mistake after Marriage

It is not permissible for a woman to take her husband’s name or his family name because that is attributing oneself to someone other than one’s father, and imitating the kuffaar from whom this custom was adopted. 

Al-Bukhaari (3508) and Muslim (61) narrated from Abu Dharr (may Allaah be pleased with him) that he heard the Prophet (peace and blessings of Allaah be upon him) say: “Any man who knowingly attributes himself to someone other than his father is guilty of kufr. Whoever claims to belong to a people when he has nothing to do with them, let him take his place in Hell.” 

“when he has nothing to do with them” means, when he has no lineage among them, as is highlighted in some report. There is no blood tie between the husband and wife, so how can she take his surname as if she is part of the same lineage? 

Moreover, she may get divorced, or her husband may die, and she may marry another man. Will she keep changing her surname every time she marries another man? Furthermore, there are rulings attached to her being named after her father, which have to do with inheritance, spending and who is a mahram, etc. Taking her husband’s surname overlooks all that. The husband is named after his own father, and what does she have to do with the lineage of her husband’s father? This goes against common sense and true facts. The husband has nothing that makes him better than his wife so that she should take his surname, whilst he takes his father’s name. 

Islam Q&A Sheikh Muhammad Salih Al-Munajjid 

> She can be called Mrs so and so but cannot replace her father’s name with her husband’s.