• amar: to love
• querer: to care for; to love. Te quiero: I love you.
• quererse: to love each other.
• gustar: to like; to be physically attracted to. Me gusta María: I like María; I'm physically attracted to María.
• gustarse: to be physically attracted to each other
• tener cariño por alguien: to have sentimental feelings toward someone
• salir con: to go out with
• estimar: to esteem
• apreciar: to appreciate
• abrazar: to hug
• besar: to kiss
• salir en cita con alguien: to go on a date with someone
• terminar: to break up with. Pepe y yo terminamos: Pepe and I broke up (our relationship broke up or ended).
• pelear: to argue.
• enamorarse: to fall in love
• casarse: to get married

Sustantivos

• el novio: boyfriend; fiancé; groom
• la novia: girlfriend; fiancée; bride
• los novios: dating couple; engaged couple; bride and groom
• los prometidos: engaged couple
• el matrimonio: marriage; wedding
• el esposo, el marido: husband
• mi esposa, mi mujer, mi señora: my wife
• mi jefa my wife (or my mom) lit. my boss (f)
• el sacerdote: the priest
• la iglesia: the church
• la boda, el matrimonio: the wedding
• la boda civil, el matrimonio civil: the civil service
• la boda religiosa, el matrimonio religioso: the religious service
• la luna de miel: honeymoon
• la pareja: the couple
• mi pareja: my partner; my significant other. It has feminine grammatical gender, so someone can say Antonio fue mi última pareja (Antonio was my last partner) even though Antonio is a male. When unmarried people live together this is the least judgmental word modern Spanish has.
• los convivientes: the cohabiting couple.