Think thee that I would desert thee? Think thee that I don't care?
or:
Think thou that I would desert thee? Think thou that I don't care?
Which one is right?
Think thee that I would desert thee? Think thee that I don't care?
or:
Think thou that I would desert thee? Think thou that I don't care?
Which one is right?
Thinkest thou that I would desert thee? Thinkest thou that I don't care?
The above is the correct form.
Don't forget your conjugational ending!