I'm in love with my best friend but he's married.
Can you tell me more about your friend?
He is so nice. I'm so devastated that he's taken.
It's not appropriate to pursue a married man as it leads to strain on that person's marriage and the possibility of infidelity. Rather than focus on your friend, you should turn your attention elsewhere and try to find someone who is single and available. If you truly value your best friend, you should respect his marriage.
Over the ears I have learned to fight for what you want. I think we should be together.
You don't even know if he likes you the same way. Ruining his marriage is wrong, if he has kids you could devastate them.