Why does this girl always try to argue with me on Facebook?

[Moe]

She is always posting comments on my page arguing with whatever I posted. She is 17 and i'm 18.

 

[Jwoww]

shes probly a loner:L

 

[Raven]

She wants attention. Unfriend her, problem solved.

 

[Janice]

ignore her and unfriend her. what worse could happen? she's just insecure with her real life and wastes her time arguing with others online. solution solved

 

[Kelcjanee]

She wants you? Or she's just a bitch with no life who thinks she's cool.