So Now I'm Fucked?

Okay so I'm just trying to figure out since a nigga from a girl's past did her wrong... does it just fuck it up for all the future nigga's? I mean i am not one to boast n some more shit but i honestly don't feel as though i am like a lot of guys overall. I am just sick of females being worried of a nigga doing them wrong due to some bitch ass that didn't realize what he had n now has created a ripple effect in the water that is now making waves n rockin the boat that other nigga's are riding along in. I also am trying to figure out if its all on the dude that fucked up or if the women is to be blamed too. I understand that a seed of doubt was planted n everything n leaves are starting to sprout when a new person comes around that may spark interest n shit but i would really like to know what in the hell does a dude have to do to show that he is a actually man and u wont have to worry about being done wrong. Or am i just thinking about it in the completely wrong way n maybe just bc someone feel a certain way doesn't mean that they feel that way n it is just a excuse that they are using to say that we're just not good enough for them..... hmmm now i sit n wonder some more.....