He kissed your thigh-
This might seem stupid but hear me out
So A brings home something for B (sibling) and C (me)
To share and B takes half of said item and C goes to take half but B stops C and tells them not to take half and take half of that half instead so C does so despite not wanting to because B says that they can always go back to get more. Then when C goes to get more of said item B argues and takes it instead because they think its too much for C, again C lets them have it because they dont wanna argue or cause a problem THEN when C was a little upset and wanted to be alone A yelled at C to be more social and sit like a family even though B took something from them. Whos at fault? Just wondering sorry its long))