Funnier than expected in its snarky riffs on horror, but persistently witless in its slasher plotting, the romantic-horror-comedy Heart Eyes juggles genres with gusto, but the act still falls flat.

HEART EYES isn’t very scary and it isn’t very romantic, but it does try to have a bit of fun, of the silly, gory type, with both the horror movie and rom-com genres, and it does have some nice special ...