Halime hatun

Halime Hatun (often called Halime Sultan) was the wife and only love of Ertuğrul Bey.

Personality
Halime is portrayed as a loyal woman, who is ready to do anything for Ertuğrul. This is shown in season 1 when Ameer El Aziz proposed to her.

She is also a skilled fighter like Aykiz as she quickly adapts to the fighting styles after marrying Ertuğrul. Her warrior personality is shown throughout the series.

Despite her living at the Kayi tribe, Halime is well-educated since she had lived at the palace for many years. Ertugrul, before he learnt to read, would ask her to read the letters sent in season 1.

Although she has many good qualities, Halime is also naive and cannot control her emotions. This is shown several times when Ertugrul tells her to stop talking.

Ertugrul
Halime Sultan met Ertugrul for the first time when he rescued her from the Templars in Season 1 Ep. 1. Both of them developed feelings for one another the moment they saw each other, though Ertugrul was the first one to express it. She was willing to sacrifice herself and let Ertugrul stay in the tribe when it needed him.

Halime and Ertugrul's relationship remained the same with no lessening in Season 2. She is called "Gazelle Eyes" by him because of her prominent brown doe eyes.

Both Ertugrul and Halime loved each other and accepted one another. She was heartbroken when she heard Candar Bey wanted Aslihan to marry Ertugrul. However, Ertuğrul refused because he only loved Halime.

Halime and Ertugrul's relationship has been portrayed a marriage. She loved Ertugrul till her death in Season 4.

Hayme Ana
Halime and Hayme Ana had a healthy relationship like a daughter and Mother. Even before getting married to Ertugrul, Hayme Ana was extremely welcoming to her.

After marriage, Halime and Hayme Ana discussed different things with one another. Hayme Ana always asked Halime's opinion on things

When Ertugrul's younger brother Dundar wanted to marry Guneyli, Halime opposed it because she doubted Guneyli and Hayme Ana scolded her. However after Guneyli was proven guilty Hayme Ana apologized to Halime and agreed she was right.

Selcan
Selcan had disliked Halime immensely when she had first arrived at the Kayi Tribe because she knew Ertugrul and Halime likes one another, and Selcan wanted her younger sister Gokce Hatun to marry Ertugrul. However, at the end of Season 1, she repents and befriends Halime.

Halime and Selcan were close as sisters in Season 2, and Halime always supported Selcan in her investigations against Aytolun and Gongacal. Selcan even saved Halime's life when Aytolun was trying to kill her. Both of them were crying when they parted in migration.

Selcan was always loyal to Halime and told Ilbilge Hatun that Ertugrul didn't love her which was true. She never gave anybody the sane place in her heart which she had given to Halime. Selcan also comforted Osman when he longed for a mother and offered to be a mother to him.

Gunduz
Being Halime's oldest son, Gunduz got the most of Halime's love before she died. His childhood was filled with the love of a mother unlike his brothers.

Halime was always protective about her son and loved him more than anything. She comforted him when he felt sad and played with him.

He was respectful towards his mother and brothers and wiped her tears when Ertugrul supposedly died in season 4. He had always offered to protect her with his wood sword.

When Halime died his entire world fell apart and he helped raise his younger brother who was the reason of the death his birth mother. Halime's death also effected his mental health frowning him into a angry young man.