These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
"The Twa Corbies" (Child #26): You will die alone, your pets and lover will forget you and leave your body to be eaten by crows.
"The Baffled Knight" (Child #112): if you meet some sweet young thing in the woods, you'd better go ahead and rape her right then and there, because otherwise she'll get away. As the sweet young thing explains to him after her escape.
"Lord Thomas and Fair Annet" (Child #73), "Fair Margaret and Sweet William" (Child #74), "Sweet William's Ghost" (Child #77) and "The Unquiet Grave" (Child #78) all deal with Star-Crossed Lovers separated by death.