The proper grammar would be: "I am mad at you for ditching your brother and me." "Me and your brother" works just as well. When in doubt, just take everything out except the personal reference. You probably would not say "I am mad at you for ditching I." or even worse: "Me am mad at you for ditching I." I is used as a subject, me is used as an object. The usage "I am mad at you for ditching your brother and I" is a very common error made by people who are perhaps trying a little too hard to be formal and correct.
stay calm
Jelousy :)
People mad.
1778
Yes
I live with my brother can I drive his vehicals under his insurance?
Marula
You get a swell, and it is a pain. Then your mommy and daddy get mad at your brother. And he never does it again.
Its a metaphor
i was auspiciously mad at my brother today
The singular possessive form for brother is brother's; for example:I drive my brother's car.