DATE [JIAYUAN.COM INTERNATIONAL] FWP: (Original Filing)
[QuickLinks -- Click here to rapidly navigate through this document http://sec.gov/Archives/edgar/data/1511683/000104746911004910/a2203664zf-1a.htm On May 9, 2011, the Company filed Amendment No. 4 to its registration statement on Form F-1, including a preliminary prospectus. This free writing prospectus updates and supplements the information contained in the Company's preliminary prospectus, dated May 9, 2011. All references to page numbers are to Amendment No.]