DATE [JIAYUAN.COM INTERNATIONAL] EFFECT: (Original Filing)

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DATE [JIAYUAN.COM INTERNATIONAL] EFFECT: (Original Filing)

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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.]

DATE [JIAYUAN.COM INTERNATIONAL] FWP: QuickLinks — Click here to rapidly navigate through

[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.]

DATE [JIAYUAN.COM INTERNATIONAL] F-1/A: (Original Filing)

[AMENDMENT NO. 5 TO Form F-1 REGISTRATION STATEMENT Jiayuan.com International Ltd. Not Applicable Cayman Islands 7371 Not Applicable Room 1005, Changxin Building CT Corporation System (Name, address, including zip code, and telephone number, including area code, of agent for service) Copies to: David S. Wang, Esq. David T. Zhang, Esq. Approximate date of commencement of proposed sale to the public:] [LEGAL OPINION To: JIAYUAN.COM INTERNATIONAL LTD. Room 1005, Changxin Building May 11, 2011 Dear Sir/Madam: 1. PRC Opinion We are lawyers qualified in the People’s Republic of China (the “ 2. Company Offering ADSs Ordinary Shares Offered Securities” Registration Statement SEC We act as the PRC counsel to Jiayuan.com International Ltd. (the “ 3. Documents In so acting, we have] [CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the use in this Registration Statement on Form F-1/A of Jiayuan.com International Ltd. of our report dated March 8, 2011, except for Note 19(c), (e) and (f) which are as of April 20, 2011, relating to the consolidated financial statements of Jiayuan.com International Ltd., which appears in the Registration] [LEGAL OPINION To: JIAYUAN.COM INTERNATIONAL LTD. Room 1005, Changxin Building No. 39 Anding Road, Chaoyang District Beijing 100029 the People’s Republic of China May 11, 2011 Dear Sir/Madam: 1. PRC Opinion We are lawyers qualified in the People’s Republic of China (the “ 2. Company Offering ADSs Ordinary Shares Offered Securities” Registration Statement SEC We act as the PRC counsel]

DATE [JIAYUAN.COM INTERNATIONAL] F-1/A: AMENDMENT NO. 5 TO Form F-1 REGISTRATION STATEMENT

[AMENDMENT NO. 5 TO Form F-1 REGISTRATION STATEMENT Jiayuan.com International Ltd. Not Applicable Cayman Islands 7371 Not Applicable Room 1005, Changxin Building CT Corporation System (Name, address, including zip code, and telephone number, including area code, of agent for service) Copies to: David S. Wang, Esq. David T. Zhang, Esq. Approximate date of commencement of proposed sale to the public:] [LEGAL OPINION To: JIAYUAN.COM INTERNATIONAL LTD. Room 1005, Changxin Building May 11, 2011 Dear Sir/Madam: 1. PRC Opinion We are lawyers qualified in the People’s Republic of China (the “ 2. Company Offering ADSs Ordinary Shares Offered Securities” Registration Statement SEC We act as the PRC counsel to Jiayuan.com International Ltd. (the “ 3. Documents In so acting, we have] [CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the use in this Registration Statement on Form F-1/A of Jiayuan.com International Ltd. of our report dated March 8, 2011, except for Note 19(c), (e) and (f) which are as of April 20, 2011, relating to the consolidated financial statements of Jiayuan.com International Ltd., which appears in the Registration] [LEGAL OPINION To: JIAYUAN.COM INTERNATIONAL LTD. Room 1005, Changxin Building No. 39 Anding Road, Chaoyang District Beijing 100029 the People’s Republic of China May 11, 2011 Dear Sir/Madam: 1. PRC Opinion We are lawyers qualified in the People’s Republic of China (the “ 2. Company Offering ADSs Ordinary Shares Offered Securities” Registration Statement SEC We act as the PRC counsel]

DATE [JIAYUAN.COM INTERNATIONAL] FWP: (Original Filing)

[QuickLinks -- Click here to rapidly navigate through this document NAME="page_bc41118_1_1"> http://sec.gov/Archives/edgar/data/1511683/000104746911004910/a2203664zf-1a.htm On May9, 2011, thempany filed Amendment No.4 to its registration statement on FormF-1,luding a preliminary prospectus. This free writing prospectus updates and supplements the informationntained in thempany's preliminary prospectus,ted May9, 2011.l references to page numbers are to Amendment No.5.]

DATE [JIAYUAN.COM INTERNATIONAL] FWP: QuickLinks — Click here to rapidly navigate through

[QuickLinks -- Click here to rapidly navigate through this document NAME="page_bc41118_1_1"> http://sec.gov/Archives/edgar/data/1511683/000104746911004910/a2203664zf-1a.htm On May9, 2011, thempany filed Amendment No.4 to its registration statement on FormF-1,luding a preliminary prospectus. This free writing prospectus updates and supplements the informationntained in thempany's preliminary prospectus,ted May9, 2011.l references to page numbers are to Amendment No.5.]

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