Entitled to Half Despite Amount of Time Married?

I have been married since February this year. Long story short, originally was seeking to get out of marriage quickly however don't qualify for this in SC and must wait the entire year. We do not have property or shared assets together; however, the home we live in ( in his name) was purchased in Oct. 2011 and I moved in Aug. 2012. and lived together with my children ever since. We have known each other other for a total of 12 yrs. I tried everything to make this marriage work. REquested counseling; he refused. Basically the problem is he goes away every weekend to work and stay at his mothers and doesn't come home..soemtimes weeks at a time even when he isn't working. He left the home in May and hasnt' returned. I was told that I could possible be entitled to half the equity in our marital home even though we haven't been married that long. Is this true? The was purchased for over $300,000 and $50,000 was put down and originally was on the market for over $600,000.