I'm going to send the same nudes to my girlfriend that I had sexted other girls with
That is a terrible thing to do. Do you not care about your girlfriend and her feelings?
She is not the only girl who got my dick, it's time for my exes to know they can't either
You should never send suggestive pictures of yourself to anyone other than your girlfriend. That sort of thing is really hurtful.
I just want to brag about my dick, who cares if others hate it?
That is disrespectful to your girlfriend and the other girls. It's rude to send suggestive pictures of yourself to others if you are in a relationship. That could be considered offensive and could get you into a lot of trouble.