You could try to approach it any which way. You either come from the north or the south, makes no difference. Cushion the impact of the incoming wrecking ball, it won’t help. Be eloquent in explaining why it would never work (even though sometimes you don’t have to be eloquent because the reason is more obvious than your 201 file).
How to deal with this. Basic principles?
There are none (thanks, Hitch).
Except for one. It’s so damn hard. No matter what your goal is or how noble your intentions maybe, it is so freaking hard to tell a girl “Thank you and have a nice life”. Furthermore, guys are at the receiving end of a terrible stereotype. When a man dumps a woman, he is branded as an insensitive and opportunistic pig. If it’s the girl who did the dumping, they just pity her and concede that the relationship simply didn’t work.
Yeah, for a guy, it is very hard to tell a normal girl “I don’t love you anymore” or “I never loved you, so let’s end this”. Having said that, how much harder do you think it is to say those things to a girl who could literally crush rocks in her bare hands?
Batman is either the bravest soul on earth or this is, intellectually, simply not one of his shining moments. 
