1999 Volvo S70 My 1999 Volvo S70GLT Won't start/Poor Gas Mi

I recently bought this Volvo S70 GLT which i've nicknamed the Blue Demon because it's Volvo's famous nautique blue and I've had nothing but problems with it since I've bought it.

When I bought the car it was in need of a new MAF and was replaced by the dealer and no harm no fowl there took it on about a 350-400 mile road trip last weekend to jaksonville and it ran fine going down but on the return it wasn't wanting to start everytime I cranked. Yesterday I went on an early morning errand to the store and it fired up but when I was getting in the car to return home the car wouldn't start, managed to coax it to start and get it home and it started usually on the first crank the rest of the day. This morning first time I turned it on the first crank and after that it hasn't wanted to turn on since. Also since yesterday morning when the car actually worked I experienced a massive drop in Fuel Economy, I only drove around 50 miles yesterday and sucked down about 4, 4.5 gallons of fuel.

The specifics on the car:
108K
New throttle Body and TPS
New MAF
Cranks but won't start
Battery is fine
Check engine light is NOT on, but obviously theres a problem.
Can still smell gas being injected into the engine so there's still gas being put into it by the EFI.

This is my first car and I'm really discouraged by the fact that the one thing I want the car to do, Run, it won't everything else within the cabin works fine A/C ice cold all windows switches buttons and lights work but that's all useless if the darn thing doesn't run.

I'd appreciate any ideas and/or suggestions

Thank You

Eric