I will have to think about it for a while to see if I can come up with a thread for you to read but I can tell you this, I usually post on the mid life crisis board, and that with google and cake eating might get you the answer. I can say no more than that here.
Deposits to a love bank are fine, except that, are you deposting more than she is taking out? Because if not you will be running a deficit, and the bank will run out. Sometimes you need to close the bank and save what is in it for use at a different time.
At least that is what I know about love banks. Great concept at the right time.