I'd like to know your thoughts on this.

i actually think its a toss up between honest and communication. but i put communication but then i got to thinking who cares about communication if ur not honest right?

For me it would be commitment and understanding with honesty [ie., acceptance of the truth and SHARING].

These all require good communication.

Romance and sex can be good starting [and continuation] points but are not essential; money requires a commitment from both to spend within means.
All these add up to LOVE!
Best regards, Bill.