Here's a proofread version of the continued text:
Henry had no more words for Graham. No matter how many times he tried to convince Graham that he was in love with Kate and tried to fix things, he would NOT believe him.
Maybe it was because Henry had a bad reputation, so it was easier to believe a snake like Sarah.
Maybe because Henry was a child of a prostitute, so Graham instantly saw him as a lesser person and thus could not be trusted.
Or maybe because Graham was obviously in love with Kate as well, so he tried to separate Henry and Kate in any way possible just to have a chance with her.
Either way, Henry had enough.
There was no pleasure in beating his late brother's best friend, especially when Henry had known Graham since he was just a child.
Graham—in any way possible—was Henry's second big brother. Though they weren't as close as he was with Michael, Henry still saw Graham as family nonetheless.
