Help with clarifying ambiguity of meaning of two sentences

[Pooya]

Hi!

Below, I cannot understand the meanings of two boldfaced sentences.

(1) You’d be forgiven for thinking me mad, the way I acted yesterday.
The truth is I feel rather light headed and foolish in your presence, and (2) I don’t think I can blame the heat.

Would you please explain it to me?

 

[SlickVic9000]

(Not a Teacher)

1) That's just a really fancy way of saying, "You must have thought I was crazy."

2) In later stages of heat exhaustion, people begin to hallucinate and act irrationally. He's saying here that his behavior can't be blamed on this.

 

[Pooya]

Thank you. Then, with regard to the sentences, are these two equal? "thinking me mad" = you thought that I am mad

 

[SlickVic9000]

(Not a Teacher)

Yes.

"You'd be forgiven for thinking me mad." = "You must have thought that I was mad."