TL;DR: Got really good at dealing with frustrating people, found somebody that seriously makes me struggle.

Title. I consider myself a really patient and forgiving guy. There are a lot of people that I've had to deal with who have been annoying or frustrating or difficult to be around. In most cases, I've been able to let it pass, be patient with them, and see them for the person they really are.

Most cases.

There is one person in my life that no matter what I try always makes me incredibly frustrated. He's condescending, annoying, unfunny, mean to his friends, etc. A lot of the people in my friend group that know him have these problems with him, and when a dynamic like that exists I try to play devil's advocate and be sympathetic. I know what it feels like to be with a group of people that resents me, so I make an effort to be sympathetic.

For whatever reason I really struggle with this person and it creates a lot of internal conflict. I'm compassionate to almost everyone I meet with him being the single exception, and it makes me feel like a hypocrite.

Do I just let myself feel this way about him and try to ignore him? Or is there a way to grow past this that I haven't found already?