I can imagine a large percentage of first uses being friends intentionally trying to send their friends on horrible dates as a gag. Having a 2-sided suggestion may work well, where you can suggest a date, D, for one of your trusted friends, F. Any of D's trustees can see D's suggestions, and vote to confirm. If the vote is successful by some metric, F's trustees can perform a similar vote. If this final vote succeeds, D & F are presented with the opportunity.