I was driving the car for a while, tried teaching my girlfriend how to drive it as well. Parked it fine and it wouldn't start again. The lights and everything turn on but the starter won't even click when I try to turn it on. So far I've checked the Clutch Safety Switch, new battery and terminals are fine, checked the ignition switch with a multimeter (it works fine), checked fuses and relays which were also fine. Any ideas? Clutch pedal is still firm might be a little less firm but I don't think it changed at all. Could be something to do with the starter, solenoid or the slave cylinder?