all-consuming, burning, deep, great, immense, intense, overwhelming, passionate, profound
her deep love for him

tender
genuine, perfect, pure, real, sheer, sincere, true
boundless, unconditional
altruistic, selfless
abiding, enduring, eternal, everlasting, lasting, lifelong, undying
He had an abiding love of the natural world.
You have my undying love.

steadfast, unfailing
new-found
secret
hopeless, unrequited
a sad tale of unrequited love

doomed
forbidden
lost
Soul Survivors is a story of lost love.

mutual, shared
free
They were into free love and avoided commitment.

first
I like most sports but tennis is my first love.

brotherly, familial, fatherly, maternal, parental, paternal, sisterly
puppy, teenage
marital, married
The poem is a celebration of married love.

courtly, platonic, romantic
the cult of courtly love in the 12th century

erotic, physical, sexual
obsessive
heterosexual, homosexual, lesbian, same-sex
redemptive
Christian, divine, human
universal

feel, have
She felt no love for him.
He had a great love of life.

experience, know
He had never known true love until now.

search for, seek
discover, find
At last she had found true love.

rediscover, rekindle
receive
From John, she received the love she had never received from her father.

earn
She has earned the love and respect of many people.

develop
He developed a lifelong love of music.

demonstrate, express, show
prove
He would do almost anything to prove his love for her.

hide
I couldn't hide my love for her any longer.

confess, declare, pledge, proclaim, profess
They publicly declared their love for each other.

deserve
I don't deserve his love.

doubt
Does she doubt my love for her?

inspire, instil/instill
cultivate, foster, nurture
We want to foster a love of learning in all children.

celebrate
a party with family and friends to celebrate their love

reciprocate, return
He didn't return her love.

share
They share a love of music.

indulge
His wealth enabled him to indulge his love of fast cars.

pursue
It gave me the opportunity to pursue my love of music.

give sb, send (sb)
Bob sends his love.

lavish, pour
They lavish love on Selah, their cat.

be in, fall in
He fell in love with one of his students.

fall out of
make (= have sex)
It was the first time they had made love.
He wanted to make love to her.

consummate

bloom, blossom, grow
Love blossomed between the two of them

die, fade
prevail
Can true love prevail?

affair
triangle
life
interest, object
She plays his love interest in the film.

rival (esp. BrE)
rat (BrE,informal)
slave
letter, note
token
ballad, poem, poetry, scene, song, story
potion, spell
nest

for love, out of love
I did it for love!

in love
We are very much in love.

love between
the love between parent and child

love for
He did not know how to express his love for her.

love of
She had a great love of painting.

an act of love
deeply in love, madly in love, passionately in love
I was madly in love with her.

desperately in love, head over heels in love, hopelessly in love
They fell head over heels in love.

love at first sight
Do you believe in love at first sight?

love conquers all
In his music dramas, love conquers all.

the love of sb's life
She was the love of his life.

dearly, deeply, passionately, really, very much
He loved his wife dearly.

absolutely, totally (informal, esp. AmE)
I absolutely love your shoes!

genuinely, really, truly
simply
She simply loved being involved.

unconditionally
He wanted to be unconditionally loved.

secretly
universally
Flowers are universally loved.

personally
I personally love the song.

Love is used with these nouns as the object:
child, country, fashion, father, feeling, film, food, job, music, work