there are two brutus am i right..?
 

yup one is Decius Brutus and the other one is Marcus Brutus
the former is among the conspirators and not close to Caesar while the latter oni is a loyal friend of Caesar and his well-wisher who later gives up his friendship and joins the conspiracy against Caesar
Decius is also the one who interprets calpurnia's dream and makes Caesar come to the senate house

hope this helps