below is my conversation with a rich guy & his gf.
me (to gf): so does ur bf pay for all ur expenses since he is so rich?
gf: sometimes...
bf: must be fair. so i decide when its her turn to pay. when i want her to pay i will tell her. haha
me: no wonder ur gf is not carrying her bag now, cos dinner is on you.
bf (to gf): why dun u give me a sub card, so you will never need to carry your bag out. if its ur turn to pay i will use your sub card!
me: idea sia...
but no way! sub cards are meant for the girlfriends!! wahaha~