adj. (common).Amorous; SPOONY (q.v.).
1883. Graphic, 17 March, p. 287, col. 3. There is always a certain amount of flirtation carried on at the half-crown ball . There are nooks and passages which give sufficient cover for the smitten (or the MASHED, as, alas! the current slang is) to exchange their confidences, as they flatter themselves unobserved.
MASHED-ON, adj. phr. (common).In love.
1886. Philadelphia Times, 19 Febr. He was MASHED ON fair Finette.
1892. MILLIKEN, Arry Ballads, p. 66. Bell Bonsor is MASHED ON me.