HERO: If it prove so, then loving goes by haps;
Some Cupid kills with arrows, some with traps.

William Shakespeare (1564-1616) English dramatist and poet

Much Ado About Nothing, Act 3, sc. 1, l. 111ff (3.1.111-112) (1598)
    (Source)

For "haps" read "happenstance" or "chance." Often elided in the front to "Love goes by haps ...."