u r not my dude n-emore

so lastnight out of the blue my ex boyfriend calls me and trys to go back into the mode like he is my dude....we have been broken up for like 2 months right and he was like what u doin and i told him i was gettin ready to go out with my new "male friend" and he was like no ur not and im like who r u to tell me what i can and can not do......it just tripped me out cuz he was arguing with me about it....then i realized y the hell am i arguing with a dude that i have been broken up with for a lil more than two months and havent talked to since then...so i just hung the phone up in his face......y do dudes feel they still have to keep tabs on their ex's???