Taken from Fun and Games group in GR.

Person 1 posts a sentence, and the next person has to develop this sentence - but using Fortunately/Unfortunately at the beginning of every new sentence.
You can choose what to use - Fortunately/Unfortunately - as you wish 

Example
Person 1: I went to a bookstore today
Person 2: Fortunately, there were lots of new books in there!
Person 3: Unfortunately, all of them belonged in a genre I hate
Person 4: Unfortunately, although I was open for new reading opportunities - they were all pretty cheesy
Person 5: Fortunately, I've just finished a lengthy, high-level classic piece of literature, I needed something light and stupid to balance it
Person 6: Fortunately, I saw all of them were on sale! 60% off, wow!
Person 7: Fortunately, I quickly found a book I might love so I bought it right away
Person 8: Unfortunately, my teacher just saw me holding my brand new copy of "teenage love" and gave me this weird look. Awkward!
[...]

and so on. Fun, right?

I'll start:

Fortunately, he doesn't care about you. 

Unfortunately, you're lying and you're just jealous of his hotness.

Fortunately i'm a always Truth speaking Guy 

Unfortunately, you're lying just now. 

Fortunately, you are right   

Unfortunately, you are an alien too.

Fortunately i'm a Earthling that's why i'm Alien to you 

Unfortunately, you were raised to think you're an earthling but the truth is, you're actually from the moon. 

Unfortunately,you're only given one day to live.

Unfortunately, I have no power to extend your life.

Fortunately, you shouted for mercy.

Unfortunately, I killed you.