Help, i duno what to do now, money!!!?

i have been going on the site foxy bingo alot and used my hubbys credit card, he found out a few weeks ago after i used �50 more than he said i could, he went balistic nearly left me, made me promise never to do it again so i did, but now i have done it again and i feel terrible i have spend around �300 and he knows nothing yet worse thing is the card is now maxed and if he goes to use it he will be reclined, if i tell him he will leave me and i cant have that so what can i do, should i borrow the money and some how put it bak into the account? or what? sensible answers only please