IELTS - Idioms
have a soft spot for
To like someone .We often use this when it's slightly surprising that we like the person.
speak the same language
If you speak the same language as someone, you have similar ideas and thoughts as them
fall out
To have a serious disagreement. (Note that you fall out with someone over or about something. Note too that there is a noun phrase have a falling out)
a rocky relationship
To have a relationship that is unsteady and perhaps sometimes fails completely. It is quite similar to a love-hate relationship.
move in the same circles
If you ____, you have the same friends. (Note that this doesn't necessarily mean that you are friends.)
be on nodding terms
To know each other only slightly. We use this for acquaintances and not friends.
know someone inside out
This is to know someone very well. (It doesn't necessarily mean that you like them)
keep oneself to oneself
Not to mix socially with other people. This is normally used in a positive sense.
a fair-weather friend
This is someone who is only your friend when things are easy. They may let you down when things go wrong.