Who is the girl interested in?

A girl I used to get with a while back. her best friend keeps showing lots interest in me and other girls

So the ex girl seems jealous she keeps flirting with my friend purposely so I see not sure to piss me off or into friend or all

I still like ex girl so is she into me Interested in me or jealous or interested in the friend or is she showing feelings for me?

Who is the girl interested in?
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