I just thought of this because i felt sad. Yeah. Anyway the game is like this:
1st person - I feel sad because (insert reason here)
2nd person - (Insert something that will make 1st person happy). I feel sad because (insert reason here)

I'll start:

I feel sad because i can't find humans to eat D:

maybe you can eat burgers
i feel sad because i had no modding idea

You feel happy because I gave u one.
I feel sad because I'm acting very neutral.

eat aggro bons!
its a candy witch makes you aggresive
i feel sad because i saw too many griefers

Fire, if you wanna be "happy"...
... well, just ask Viper. =w=

You feel happy because of this thread.
I feel sad cuz my afro is gone :(.

Now your happy because i gave you my hair xD
I feel sad because of no reason at all.

you will be happy
I feel sad because my foot hurts like a b****

You are now afroless forever
I feel sad because im not sad

Off topic answer to Soap: My answer is: No.
On topic: Then be happy!
I feel sad for feeling sad...

I give you eternal happiness.
I feel sad because people are hating on me.

I give you paul's love
I feel sad because I'm being entertained on the ORS chat

I missed you when you were gone Zher!
I feel sad because you left pinpoint...

Oh wait we're supposed to say what we're sad about? oops. ^^'

I TRIED to give you cover fire to make up for it Viper, but you ditched me... </3
I feel sad because Viper secretely hates me... T________T

Be happy because she will not hate on you! I think...
I still feel sad because i feeled sad and i feel sad and i felt sad.

your not going to be happy.
I feel happy about even more HOLY SHIT SOMETHING HIT THE ROOF

Be happy because you were happy because someone made you happy because you were sad so you became happy from being sad.
I feel sad because I constantly have to keep modding my sights because they have small flaws that are very dangerous. :(
(EDIT: Ninja'd XP)

(I don't hate soap!!!!!)
Be happy that you have mastered the power of confusion!!!
I feel sad that I can't spell...

Don't worry, bout a thing, cuz every little thing, is gonna be alright.
I feel sad becuase you feel sad

Be happy because she is happy.
I feel sad because i'm lonely in a server.

Your not sad.
I'm sad because your feeling something.