fair-weather friend
US /ˈferˌweð.ər ˈfrend/
UK /ˈferˌweð.ər ˈfrend/

1.
teman di kala senang, teman musiman
a person who is only a friend when things are going well and abandons you when difficulties arise
:
•
I thought he was my friend, but he turned out to be a fair-weather friend when I lost my job.
Saya pikir dia teman saya, tapi dia ternyata teman di kala senang ketika saya kehilangan pekerjaan.
•
Don't rely on him; he's just a fair-weather friend.
Jangan mengandalkannya; dia hanya teman di kala senang.