Angelina Johnston
Angelina Johnson, who he did marry.
No, he was killed in the final battle at Hogwarts.
Arthur, Molly, Bill, Percy, George, Ron, Ginny.
George Weasley lost an ear during the Seven Potter's fight and Fred Weasley died during the final battle. George went on to marry Angelina Johnston (whom Fred took to the Yule Ball) and they had two children; Fred (in honour of his brother) and Roxanne.
Presumably because he loved her. They get married after the series so it isn't explored in the book.
Since Fred died he could not marry anyone but seems that George married Angelina Johnson and had 2 kids Fred and Roxanne Weasley.
William 'Bill' Weasley married Fleur Delacour in the seventh book. They have three children: Victoire, Dominique and Louis. Charlie Weasley never married. Percy Weasley married a woman named Audrey and they have two children: Molly and Lucy. Fred Weasley died in the final battle. George Weasley married Angelina Johnston together they have two children: Fred and Roxanne. Ronald 'Ron' Weasley married Hermione Granger. They had two children: Rose and Hugo. Ginerva 'Ginny' Weasley married Harry Potter and had three children: James Sirius, Albus Severus and Lily Luna Potter.
The Weasley brothers married as follows:Charlie Weasley never marriedBill Weasley married Fleur DelacourPercy Weasley married a woman named AudreyFred Weasley died during the final battleGeorge Weasley married Angelina JohnsonRon Weasley married Hermione Granger
None of the brothers marry Luna. Ron marries Hermione, Bill marries Fleur, Fred dies, George gets married to Angelina Johnson, and Charlie doesn't get married.
Luna does not marry and of the Weasley's, she married Rolf Scamander.
Ron Weasley marries Hermione Granger, one of his best friends for all seven of their years together. In the last year, when Harry Potter defeats Lord Voldemort, they share their first kiss, and then, nineteen years later, they are married and have two kids by the name of Rose and Hugo Weasley.