Clutch pedal stays on the floor unless pressed and depressed quickly.?

Today I started my car after a couple hours of it sitting. I reverse and get on my way like normal, but as I switch to 4th gear I think, the clutch pedal stayed down. Only by using my hand could I bring it back up. I can turn the car on with the clutch down but not select gears. After a little research and time I went back and went to push the clutch in and out with my hand and noticed it would come back to the up position. I then noticed it will only return with quick presses, as holding it down for even a moment will cause it to stay down. Im guessing something with pressure or the lines going to the clutch master cylinder? I drive an 89 Ford Probe GT.