Is my same-sex partner entitled to my assets in a divorce?

Any assets acquired during the term of the marriage are subject to equitable distribution. It doesn't matter if you are in a same-sex relationship. If the asset or liability was acquired during the term of the marriage, those assets and liabilities are divided at the time of divorce between the parties. Unless, you have entered into a prenuptial agreement which dictates how those assets would be divided in the event of the dissolution of marriage.