Unfair

Life is unfair. 

 
You put someone first who puts you second. 

You study hard for a final only to get a C. 

 
give 110% to someone in a relationship when they only give 40%. 

 
You're there for your best friend at 3 a.m.... and the next day they don't pick up their phone. 

 
It seems like you're giving everyone everything, and they're just walking away with it....