1
confabular (con);conspirar (con);establecer un romance secreto;hacer amigos con;ligarse bien con;volverse íntimo (con el sexo opuesto)
1
to collude (with);to conspire (with)
2
to make friends with;to get along well with
3
to become intimate (with opposite sex);to establish a secret liaison (with)
Other forms
なれ合う 【なれあう】