Why did a guy say 'if I was him id definitely get with you' when I told im about to confess to my crush who probs doesn't like me back?

[OlderAndWiser]

He was letting you know that he wants to be your Plan B.

[dixie4]

i think he likes you. he's definitely showing that he is interested and that he wants to be considered/ part of the equation if that makes sense

[virgin20]

Your guy friend likes you. Pretty obvious