A ‣ Love and romance 
When Tom met Lily, it was love at first sight. [love began the first time they saw each other]
She fell head over heels in love with him. [fell deeply and madly in love]
Nick only has eyes for Sophie. He’s not interested in other girls. [is only attracted to]
Lauren was more than infatuated with Dave; she was completely besotted with him. [romantically obsessed with] [almost stupidly or blindly in love with]
I’ve often seen Matt and Ellie at the cinema together, but it’s purely a platonic relationship. [affectionate relationship between people of the opposite sex that is not sexual]
B ‣ Friendships and other positive relationships 
Anona and I hit it off immediately; we’re true soulmates. [liked each other the moment we met] [people who feel close in spirit and understand each other deeply]
The moment I met Rob, I could see he was a man after my own heart. [someone you admire because they do or think the same as you; also woman after your own heart]
Charlie and I get on like a house on fire. [have a very good, enjoyable relationship]
Rob and Jamie have been bosom friends/buddies/pals for years. [very close, good friends]
Marta and Carmen are inseparable. [always want to be together, very close]
There’s a close bond between Rushda and her aunt. [relationship or feeling of togetherness]
C ‣ General social relationships: collocations 
The replies in these conversations are another way of saying what the first speaker says.
A: You seem to be very similar to Ben – the way you think and look at life.
B: Yes, we’ve always been kindred spirits.
A: What a nice wedding! Nathan and Amelia seem to be perfect for each other.
B: Yes, such a well-matched couple!
A: Our Spanish friends are always phoning their brothers and sisters.
B: Yes, well, I think family ties in Spain are much stronger than here.
A: I’ve never met Rosie, but I know several people she knows.
B: Yes, she said you have a number of mutual acquaintances.
A: Gareth has a lot of respect for Clare.
B: Yes, he holds her in high regard.
A: Sarah and Anna are very close these days. I’m sure they share all their secrets.
B: Yes, they’re as thick as thieves.
D ‣ Nouns and adjectives 
adjective | noun | example |
adoring | adoration | The parents gazed at their new-born baby with a look of tender adoration. |
affectionate | affection | He never shows much affection for his children. |
amiable | amiability | She always treats us with great amiability. |
considerate | consideration | ‘Have some consideration for the other students!’ she said angrily. |
faithful | faithfulness | Faithfulness is the key to a good marriage. |
fond | fondness | Over the years she developed a fondness for Mario that went beyond a purely business relationship. |
loyal | loyalty | He was a great team captain who inspired loyalty in the players. |