love, affection / attachment or attraction to a particular partner, erotic affection

constancy, unchangeable, immutable, everlasting

constant; permanent

express one's appreciation

thanks, appreciation, gratitude

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

(Marxism, capitalism) constant capital

Thanksgiving