Bellevue-based IceBreaker said today that its Crush or Flush application is now available to 4.5 million Boost Mobile subscribers.

If you don't already know, Crush or Flush is a mobile social networking service that helps people meet each other on a cellphone.

For 69 cents a day, users can chat by text message if two people have a mutual crush (without revealing each other's cellphone numbers). They can also sort and view profiles based on age, gender, orientation, location, and interests; and can find out who has been "crushing" them. If anyone remembers from middle school, a crush is someone interested in you.

Icrebreaker said Crush or Flush has more than 250,000 members since launching in January. On average, members access the service twice a week and use the service for 20 minutes a session.