throw yourself at someone
phrasal verb with throw verb uk/θrəʊ/ us/θroʊ/ threw | thrown
informal disapproving
向（某人）献媚，勾引（某人）
to make it very obvious to someone that you want a sexual relationship with them
I don't know what it is about John, but women just seem to throw themselves at him. 我不懂约翰究竟有什么招数，反正女人们似乎总是对他投怀送抱。