A checklist of little use

do you have fun in bed?
do you have fun doing other things?
do you support each other in difficult times?
do you consider the other person exceptional?
do you accept and respect each other?
do you listen, and are you heard?
do you talk about what is important?
do you trust each other?
do you get the space you need, and can you grant it?
do you share values?

can you share silence?
can you be a team in a practical sense?
can you commit?