No.
You have a positive lead to the starter from the battery, starter grounds through its case.
The starter relay, mounted to the inner fender well near the battery has a positive lead from the battery too. There are also three other connectors on the starter relay. One is marked IGN, that is where the signal comes from when key is turned to start position. One is marked SOL, that runs to the starter solenoid and is what causes the starter spin and the clutch to engage so the gears mesh and the engine (hopefully) cranks over. The last connector is marked G for ground.
If you have your primary battery cable connected to the starter, starter is grounded through its case. When trying to start the engine with the key, a signal comes in on IGN and if the starter relay is correctly funtioning a signal will go from SOL to the starter's solenoid, the solenoid is excited, starter spins, clutch forces gear into engagement with flexplate's teeth.
You can jump a positive lead from the battery, or from the primary positive cable, to the solenoid on the starter. That would be bypassing the starter relay to see if the starter will function as intended.
Also, wouldn't hurt to make sure your battery is fully charged. It may be too weak from all the starting attempts, so make sure it is fully charged.
Good Luck.