Charades

Four letters
One syllable
Sounds like shove
My hearts been shoved down a flight of stairs

First letter is L
As in Lost
I seem to be lost without you

Last letter is E
As in Endless
Sometimes this heartache seems endless

Second letter is O
As in Obedient
My heart followed obediently to its destruction

Third letter is V
As in Victorious
In Love, Heartache is the only Victor

Synonyms include
Affection,
(Thief, Sorrow)

Amour,
(Heartache,
Calamity)

and Fondness
(Lonliness,
Insecurity)

Definitions include:
a strong positive emotion of regard and affection
butterflies and giggling
any object of warm affection or devotion
knowing all else pales in comparison
beloved, a beloved person
having meaning and value greater than all the world combined
be enamored or in love with
feeling complete

Commonly associated words:
Loss, heartache despair,
You