7. A method for suggesting messages in a social dating system, comprising: receiving a request from a user device associated with a viewing user to view a matching user; identifying a common interest representing a general interest in common between the viewing user and the matching user based on interactions of the viewing user with a first social networking object for a first specific interest and interactions by the matching user with a second social networking object for a second specific interest, where the first and second social networking objects are different; selecting a promotional offer for the viewing user for an activity to do with the matching user related to the identified common interest; and transmitting the promotional offer to the user device for display.
11. The method of claim 7 , wherein the promotional offer is sent to another user device associated with the matching user.