Responsa for Kiddushin 98:12
על מנת שיש לו בת או שפחה מגודלת ואין לו או על מנת שאין לו ויש לו על מנת שאין לו בנים ויש לו או על מנת שיש לו ואין לו ובכולם אע"פ שאמרה בלבי היה להתקדש לו אעפ"כ אינה מקודשת וכן היא שהטעתו
etc. Ten kabs of sores descended to the world: nine were taken by swine, etc. Ten kabs of immorality descended to the world: nine were taken by Arabia, etc. Ten kabs of impudence descended to the world: nine were taken by Mesene.<span class="x" onmousemove="('comment',' The island formed by the Euphrates, the Tigris and the Royal Canal.');"><sup>18</sup></span> Ten kabs of gossip descended to the world: nine were taken by women, etc. Ten kabs of drunkenness<span class="x" onmousemove="('comment',' Var. lec, 'blackness'.');"><sup>19</sup></span> descended to the world: nine were taken by Ethiopians, etc. Ten kabs of sleep descended to the world: nine were taken by slaves,<span class="x" onmousemove="('comment',' Cf. B.M. 64b-65a.');"><sup>20</sup></span>
Teshuvot Maharam
A. If there are witnesses that A proposed to Leah on a previous occasion and that she accepted his proposal, she is betrothed to A, even though A did not expressly say he was betrothing her. When there are no such witnesses, but both, A and Leah, admit that they had a previous understanding between them, or that at the time A gave the money to Leah they both intended the money to bind them in betrothal, Leah is betrothed to A. Moreover, the mere statement of A to Leah that he gave her the money as a token of love may constitute a betrothal, and therefore, Leah needs a divorce from A before she can marry another.
SOURCES: Cr. 19; Pr. 519–520; Mord. Kid. 521; Tesh. Maim. to Ishut, 4.