Definitely. Fanfiction writers often create interesting scenarios for Blaine and Sebastian to share a kiss. For example, in some stories, they might be in a competition and the kiss could be a form of taunt that turns into something more. Or it could be a moment of reconciliation after a big fight. There's a whole world of creativity in these fanfictions.
Common themes in Blaine and Sebastian Glee gay fanfiction are acceptance and coming - out. Given the nature of their relationship and the environment in Glee, these themes play a big role. They often have to deal with how others in the Glee club or at school will accept their relationship. Also, the theme of passion is quite prevalent. Their relationship is often depicted as full of passion, whether it's through their singing duets or their personal interactions off - stage. There's also the theme of redemption for Sebastian, as in some fics he has to make up for his past actions.
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.
Fanfiction.net also might have some. However, AO3 usually has more comprehensive tagging systems which can make it easier to find exactly what you're looking for. Another option could be Tumblr, where some users might share or recommend such fanfictions, although it's not as organized as the dedicated fanfiction sites.
Love and relationships are often common themes. Since it involves Kurt, Blaine, and Sebastian, there might be complex love triangles or reconciliations. Another theme could be the challenges of the mpreg situation, like how the character deals with the physical and emotional changes.
One popular Blaine and Sebastian Glee gay fanfiction is 'Sebastian's Redemption'. It delves into Sebastian's character development and his relationship with Blaine in a really interesting way. Another one could be 'The Unlikely Bond' which shows their journey from rivals to something more. There are also various fanfiction platforms like Archive of Our Own where you can find a whole bunch of such stories.
One great piece of fanfiction is 'The Journey of Kurt, Blaine and Sebastian'. It beautifully explores their relationships and personal growth. It has some really touching moments that stay with you.
Sorry, I don't have a particular 'glee kurt blaine sebastian mpreg fanfiction' to recommend directly. However, when looking for such fanfics, you could also check out fanfiction.net. Look for tags related to the characters and the 'mpreg' concept. Keep in mind that the quality can vary greatly, so read the reviews or summaries before diving in.
One popular Glee Blaine sick fanfiction is 'Under the Weather'. It beautifully portrays Blaine being sick and how the other characters, especially Kurt, take care of him. The story focuses on the tender moments between them during his illness.
I'm not sure if there is specifically 'glee blaine abused' fanfiction. Fanfiction can cover a wide range of themes, but abuse is a very serious and often disturbing topic. The 'glee' fandom generally focuses on more positive aspects of the characters' relationships, like friendship and romance, so it might not be a common type of fanfiction within the fandom.