saccharine
adjective
some saccharine love songs:
sentimental, oversentimental, over-emotional, mawkish, cloying, sickly, sugary, syrupy, sickening, nauseating, maudlin, lachrymose, banal, trite;
informal mushy, slushy, sloppy, schmaltzy, weepy, cutesy, lovey-dovey, gooey, drippy, sloshy, soupy, treacly, cheesy, corny, icky, sick-making, toe-curling;
British, informal soppy, twee;
North American, informal cornball, sappy, hokey, three-hanky.