Definitely Mercedes. She could be the one who gives Kurt some great advice on love and marriage. Also, she might sing a beautiful song at the wedding. Artie would also be a great addition. He could be in charge of the music playlist for the reception. And Santana, she could be the sassy bridesmaid or groomsman who adds some spice and humor to the whole event.
I'm not sure if there is a specific 'glee kurt cheats on blaine fanfiction' that is considered 'worth reading'. Fanfiction can vary greatly in quality. Some might find such a plotline interesting because it adds a new layer of drama to the relationship between Kurt and Blaine. However, others might be turned off by it as it goes against the positive image of their relationship in the original show.
A popular fanfiction is 'Nine Years: A Kurt and Blaine Retrospective'. This fanfic is more of a collection of vignettes that look at different moments in their nine - year relationship. It's great because it allows the reader to dip in and out and still get a full sense of their journey together.
One popular one could be those that focus on their relationship development in high school. For example, stories might explore how they overcame the initial shyness and social pressures at McKinley High. Another type could be about their post - graduation adventures, like moving to New York together and facing new challenges in the big city.
One popular story could be 'A New Beginning for Kurt and Blaine'. It often focuses on their relationship development after certain events in the 'Glee' series. Another is 'Kurt and Blaine's Adventure in New York', which might explore their lives in the big city.
The main characters are Blaine and Kurt. Blaine is the one who is proposing, so he is likely to be very nervous yet determined in the story. He has planned this big moment and is ready to take their relationship to the next level.
One common theme is friendship. Despite their differences and the love triangle situation, they often find a way to be friends. Another theme is self - discovery. Each character is on a journey to figure out who they are, especially in relation to their relationships with the others.
One great glee kurt blaine fanfiction is 'The Journey of Love'. It beautifully portrays their relationship development, from the initial attraction to the deep emotional bond. The story is filled with sweet moments and some challenges they face together, which makes it very engaging.
You can find glee kurt blaine fanfiction on websites like Archive of Our Own (AO3). It has a vast collection of fan - created stories. Just search for 'glee kurt blaine' in the search bar, and you'll get a long list of relevant fanfictions.