Sentence:  Thenne within an houre there came the knyghte to whome the pauelione ought / And he wende that his <WSD>lemā</WSD> had layne in that bedde / and soo he laid hym doune besyde syr Launcelot / and toke hym in his armes and beganne to kysse hym / And whanne syre launcelot felte a rough berd kyssyng hym / he starte oute of the bedde lyghtely / and the other knyȝt after hym / and eyther of hem gate their swerdes in theire handes<!--Prior quote:He wente that his lemman had layne in that bed, and so he leyde hym adowne by Sir Launcelot and toke hym in his armys and began to kysse hym.--> 
Meaning of the word marked with <WSD> tags:  One beloved; a lover, a sweetheart of either sex (especially a secret lover, gallant, or mistress).