Exhibit 99.1 Joint Filer Information Dates of Events Requiring May 20, 2010 Statement: May 21, 2010 Issuer Name and Ticker or Trading Symbol: Crosstex Energy, L.P. [XTEX] Designated Filer: GSO Special Situations Fund LP Other Joint Filers: GSO Capital Partners LP GSO Advisor Holdings L.L.C. Addresses: The address of the principal business and principal office of each of GSO Special Situations Fund LP, GSO Capital Partners LP, and GSO Advisor Holdings L.L.C. is 280 Park Avenue, New York, NY 10017. Signatures: Dated: May 25, 2010 GSO Special Situations Funds LP By: /s/ Marisa Beeney ----------------------- Name: Marisa Beeney Title: Authorized Person GSO Capital Partners LP By: /s/ Marisa Beeney ----------------------- Name: Marisa Beeney Title: Authorized Person GSO Advisor Holdings L.L.C. By: /s/ Robert L. Friedman ----------------------- Name: Robert L. Friedman Title: Authorized Person