No, they don't. The manga doesn't have a storyline where Taiga gets married. Usually, the focus is on other aspects of the characters' development and the main plot.
Taiga and Ryuuji don't end up getting married in the manga. The story focuses more on their relationship development and personal growth rather than a marriage plot.
You could look for manga on platforms like KissManga. However, keep in mind that not all the content there might be properly licensed. It's always best to support the creators by using legal and paid services when possible.
Well, there are a few options. Sometimes, authors or publishers release some chapters for free on their official websites or social media. Another possibility is to look for community-driven projects that share manga legally, but it might take some searching to find them.