You may want to read up on that before you blindly follow the anti-Romney brigade.
That was passed by the MA supreme court, not by Romney. He fought it. They did it right before his term expired.
No, you want to read up on it. the MA supreme court told the LEGISLATURE that the MUST go back to the drawing board and come up with a gay marriage proposal.
Even though the MA legislature is extremely liberal, they refused to act.
Then Bishop Romney did it, all on his own. He issued a proclamation that gay marriage was the new law of the state, and that any marriage clerk who refused to do gay marriages would be removed from his job.
In other words, as I said, Romney did it single handedly, by proclamation. No law was ever passed, as the court asked.
That was a first. The first state to have gay marriage. And Romney did it, all by his little self. Just like Obama, who also likes to do these things himself, without congressional consent or approval.
He "fought" it enough to maintain plausible deniability for his GOP presidential run. See Mass. Resistance, Timeline Documents Romney's Role in Creating Same-Sex "Marriages".