Should I still persue her?

So about a month ago there was this girl who was dropping hints that she liked me, and after a while I was pretty certain that she did like me.

A few weeks passed and then this other guy starts taking to her ( he knows she's single). This guy is a proper dick, like he's cheated on so many girls and she knows it, but now it looks like she's got a thing for him. Friends said to her does she realise what an arse this guy is, but she just shrugged it off.

She still flirts with me like grabs my arm and just little stuff like that.

I just don't know whether I should persue this or not. Any help greatly appreciated.
Should I still persue her?
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