An impossible position, social liberalism requires non fiscally responsible big spending.
I don't see why you can't think abortion should be legal and that homos should be allowed to marry each other (if this is what social liberal means) and not hate taxes and government spending. I'm sure plenty of everyday people feel that way.
However in elected politicians that alignment is unheard of. Those who have claimed it are liars who aren't fiscal conservatives at all. Jesse Ventura for example. "Fiscally conservative, socially liberal" was his friggin motto. And he wanted to hike taxes. Mark Kirk and the twins from Maine are so 'pro-choice' they want taxpayers to fund abortions.