How do I join these...

Hi Valentine;

Please pick the choice you think is correct. Then we will tell you if you were correct.

A-s

1. I have to do something new so we are not enemies anymore.
2. I have to do something new so we not to be enemies anymore.

I suppose neither is correct. I wonder how to say this kind of construction properly (context is meaningless).

This one is OK:

1. I have to do something new so we are not enemies anymore.

But it's better this way:

1. I have to do something new so we won't be enemies anymore.

#2 is totally wrong.

Thank you.