; and (B) in subsection (e)(2), by striking or (D) after subparagraph (C) and inserting , (D), or (F) . (c) Substitution of paid leave Section 102(d)(2) of such Act ( 29 U.S.C. 2612(d)(2) ) is amended by adding at the end the following: (C) Meet needs relating to being a victim of dating violence, domestic violence, sexual assault, sex trafficking, or stalking An eligible employee may elect, or an employer may require the employee, to substitute any of the accrued paid vacation leave, personal leave, or medical or sick leave of the employee for leave provided under subparagraph (F) of subsection (a)(1) for any part of the 12-week period of such leave under such subsection, except that nothing in this title shall require an employer to provide paid sick leave or paid medical leave in any situation in which such employer would not normally provide any such paid leave. . (d) Certification Section 103 of such Act ( 29 U.S.C. 2613 ) is amended by adding at the end the following: (g) Certification relating to being a victim of dating violence, domestic violence, sexual assault, sex trafficking, or stalking (1) Subject to paragraph (2), an employer may require that a request for leave under section 102(a)(1)(F) be supported by a certification issued at such time and in such manner as the Secretary may by regulation prescribe. (2) In the case of an employee requesting leave under section 102(a)(1)(F) who has not yet received a certification as described under paragraph (1), such employer shall accept a sworn statement on a form prescribed by the Secretary that such employee has requested such certification. . (e) Definitions Section 101 of such Act ( 29 U.S.C. 2611 ) is amended by adding at the end the following new paragraphs: (20) Dating violence The term dating violence means violence committed by a person— (A) who is or has been in a social relationship of a romantic or intimate nature with the employee