YOUR DATING A GIRL WITH A CHEVY!!! Well that's your first problem dude....
j/k..... I would say just check the plugs and wires. Sounds like it's having a hard time igniting, maybe a simple fix would be try to run injector cleaner threw it and see if that helps..... I would try to put premium in it, and then take it on the highway for a good boot.
Good luck,
¡ìam.