Koss

From Memory Alpha, the free Star Trek reference.

You may be looking for Yedrin Koss.

Koss was a highly skilled Vulcan architect, who, as a child, was arranged to be married to T'Pol. His father was an influential member of the Vulcan High Command.

In 2151, T'Pol postponed her wedding with Koss, a man whom she had only met four times before, to remain aboard Enterprise. (ENT: "Breaking the Ice")

After T'Pol's return to Vulcan after the Xindi incident, she still refused to marry him. T'Les, her mother, urged her to marry him. Koss visited her and told her that he wanted to marry her. He attempted to persuade her by offering to let her resume her career if she spent one year with him on Vulcan. He also offered to help her mother regain her position at the academy from which she had been dismissed because of T'Pol's involvement with the incident at P'Jem. Koss and T'Pol were finally married in 2154. (ENT: "Home")

Later that year, Koss brought T'Pol a crypted message and a map of the Vulcan desert from her mother on board the Enterprise. He ended his marriage with T'Pol after the death of her mother, T'Les. Shortly thereafter, their marriage was officially dissolved. (ENT: "The Forge", "Kir'Shara", "Babel One")

Koss was played by Michael Reilly Burke.