Alright, so first let me explain beforehand:

I've lived with a couple close friends and I've seen the whole 'date inside the friend cirle/have relations' thing turn terrible.
They have both slept with a guy that friend A had not only feelings with, BUT history, and it's created a tad bit of tension.
However it's been resolved somewhat and they've become closer because of it.


SO ANYWAYS.

There is this fellow that I find attractive and overall a swell guy. However, he's dated a couple of my friends (around 3-4 years ago?)
But it still falls under the whole circle of friends thing. I don't really want to step on toes or fall into the whole ordeal of the previous situation.
I know that currently no one has feelings for him, nor wants to date him. (I've had this conversation with them several times just to be sure.)

Should I even attempt to get closer to this fella or is it too risky?

I know that he for lack of a better word, likes me; I just don't want for everything to open a can of worms, you know?
So advice, please. c: