His name on credit card.. am i responsible?

Yes - if he is demanding you pay part of the bill, he has to give full disclosure on the charges he says you are responsible for - he can't just give a number and say "this is what she has to pay" and expect the court to take him seriously.

Thankyou spaznskitz.  I was wondering if I have the right to see the itemized credit card bill.  So I know what was purchased during marriage.  You see he also cheated on me and was buying his lil 'lady' friend gifts.  So when he demanded I separate bank account from joint to single accounts, and the phone accounts also (so as I couldnt see what he was doing) I have no idea what is purchased now on the card, and refuse to pay for that.

the answer to this is yes & no (nice, huh? lol)

this is one of those divorce points that couples end up bickering over for hours across a mediation table.

because the charges were made during the marriage and for marital property, yes, you would be responsible for half of the debt as pertains only to marital items -

however

since he took the items, that are half yourse due to being marital property, he has to make a choice, either return items to you of equal value to half the debt, or the debt must be his sole responsibility.

If he chooses to return items to you, make sure the balance of the bill is only for those marital items and not for any charges after he left - or other misc. charges he made on his own.

I'm a family law attorney