.predictability.

So I'm doing a "creative writing" unit this semester ritee...
And basically,
I need to write up 1700 words short stories.

My previous story was about a guy meeting a girl,
the girl got excited at the prospect of finding love,
but at the end,
she found out she was on the wrong page,
and the guy shot her down.
The story ended with her going out,
naive-ly finding other guys to fall for,
and not learning her lesson..

This time,
I wrote a story about a guy and girl who's been in a rship for 6 months.
The girl is beginning to feel uneasy in the rship,
which was later revealed that it was becuz of a bad past rship.
Basically,
The past has been holding her back.
Then her friend points out her problems and she realises how she's been wreaking all her rships after being by a guy in the past.
Now...
The story can end two ways.

1) They're in bed, everything is blissful,
she realises she's ready to love again.

2) They're in bed, everything is blissful,
until she accidentally called the current guy by the wrong name.
(her holding-her-back ex's name, obviously)

So...
Which is a better ending?

I want soOo much to write a happy love story.
But then people would say its too predictable.
But isn't the "she didn't get the guy at the end" ending getting predictable too?
Cuz everyone thinks if she gets the guy,
its predictable.
So everyone makes it a point to make sure she doesnt.
So by that,
wouldn't the truth be... if she doesn't get the guy,
it's be predictable??

Am I making sense?
Argh.
Maybe its a good thing I'm doing Law.