cosy up (to sb)
phrasal verb with cosy verb UK (US cozy) uk/ˈkəʊ.zi/ us/ˈkoʊ.zi/
（处于谋私的目的）与…交好
to be very friendly to someone with the hope of getting an advantage
Opponents say he has a record of cosying up to polluters and accepting their campaign donations. 他的对手说他一贯与造成污染的企业关系密切并且收受他们的竞选献金。