I'm going to return and exchange my boyfriend's valentine's day gift to me
Why do you want to return it? Is there something wrong?
Because I don't want one. I want something more monetary. I'm practical.
It is rude to return a gift. They could find out and be hurt if they notice it is gone.
I really don't care if they notice.
That sounds pretty cold. Why not keep it and then talk to them at a later time about how you like practical gifts. I think you might get something more inline with what you want next time if they are aware.