[Jiayuan.com International Ltd. Announces Shareholders’ Approval of Merger Agreement The parties currently expect to complete the Merger in the first quarter of 2016, subject to the satisfaction or waiver of the conditions set forth in the Merger Agreement. Upon completion of the Merger, the Company will become a privately-held company and its American depositary shares (“ADSs”), every two ADSs representing] [001-35157 JIAYUAN.COM INTERNATIONAL LTD. F/15, Anhua Development Building No. 35 Anding Road Chaoyang District, Beijing The People’s Republic of China (8610) 6113-6312 Form 20-F x o o o Yes o x JIAYUAN.COM INTERNATIONAL LTD.]

[QuickLinks -- Click here to rapidly navigate through this document Jiayuan.com International Ltd. Announces Extraordinary General Meeting of Shareholders Shareholders of record as of the close of business in the Cayman Islands on December 17, 2015 will be entitled to vote at the EGM. The record date for ADS holders entitled to instruct Citibank, N.A., the ADS depositary, to vote] [Use these links to rapidly review the document PROXY STATEMENT OF THE COMPANY December 7, 2015 Shareholders of Jiayuan.com International Ltd. Dear Shareholder: You are cordially invited to attend an extraordinary general meeting of shareholders of Jiayuan.com International Ltd., an exempted company with limited liability incorporated under the laws of the Cayman Islands (the "Company"), to be held on December] [QuickLinks -- Click here to rapidly navigate through this document PROXY CARD Jiayuan.com International Ltd. PROPOSAL NO. 1: As a special resolution, authorize, approve and adopt the Agreement and Plan of Merger, dated as of December 7, 2015 (as amended and restated from time to time, the "Merger Agreement"), among LoveWorld Inc., an exempted company with limited liability incorporated under] [QuickLinks -- Click here to rapidly navigate through this document No Action Necessary Depositary's Notice of Extraordinary General ADSs: American Depositary Shares. ADS CUSIP Nos.: 477374102 and 477374995. December 8, 2015. Meeting Specifics: Extraordinary General Meeting to be held on December 29, 2015 at 10:00 a.m. (local time) at offices of Paul Hastings LLP, 22/F, Bank of China Tower, 1] [QuickLinks -- Click here to rapidly navigate through this document Extraordinary General Meeting The Voting Instructions Card must be signed, completed and received at the indicated address prior to VOTING INSTRUCTIONS CARD Jiayuan.com International Ltd. (the "Company") ADS CUSIP Nos.: 477374102 and 477374995. December 8, 2015. Meeting Specifics: Extraordinary General Meeting to be held on December 29, 2015 at 10:00] [001-35157 JIAYUAN.COM INTERNATIONAL LTD. F/15, Anhua Development Building ý o Form 20-F o o o ý Yes JIAYUAN.COM INTERNATIONAL LTD. Shang-Hsiu Koo Chief Financial Officer]

[After the Merger is completed, Mr. Linguang Wu, director and chief executive officer of the Company, will serve as co-chairman and co-chief executive officer of the Surviving Company Barclays Bank PLC is serving as financial advisor to the Special Committee. Davis Polk & Wardwell is serving as U.S. legal advisor to the Special Committee and Walkers is serving as Cayman] [EXECUTION VERSION AGREEMENT AND PLAN OF MERGER dated as of December 7, 2015 among JIAYUAN.COM INTERNATIONAL LTD., LOVEWORLD INC. and FUTUREWORLD INC. TABLE OF CONTENTS PAGE ARTICLE 1 DEFINITIONS . Definitions Section 1.01 2 . Other Definitional and Interpretative Provisions Section 1.02 8 ARTICLE 2 THE MERGER] [EXECUTION VERSION SPONSOR GUARANTEE GUARANTEE AGREEMENT Agreement Guarantor Company W I T N E S S E T H : Parent Merger Subsidiary Obligor Merger Agreement WHEREAS, LoveWorld Inc., an exempted company with limited liability incorporated under the laws of the Cayman Islands and an indirect wholly-owned subsidiary of Guarantor (“ WHEREAS, as a condition precedent to entering into the] [001-35157 JIAYUAN.COM INTERNATIONAL LTD. F/15, Anhua Development Building No. 35 Anding Road Chaoyang District, Beijing The People’s Republic of China (8610) 6113-6312 Form 20-F x o o o Yes o x JIAYUAN.COM INTERNATIONAL LTD.]