first off, my car has been having a rough time starting (but i figure thats from my TPS and IACV going bad), but this morning i went to start it, it took about five tries and fired up. i let the engine idle until warm and once it got warm, i got a small leak from my fuel filter... i had just put on a new hose so i figured it wasnt tight enough. i cut the car off to tighten it and when i went to turn the car back on it wouldnt start...i tried a few times and still nothin so i look under the hood for anything sketchy. i noticed my when i put my key to start the fuel pump primes but its not holding fuel pressure. when it primes is goes up to 60psi and goes right back down to 0. i'm thinking bad fuel main relay? ALSO, earlier in the week when the car was running it was reading over 100psi fuel pressure, and between 70-80 with the vacuum line removed and return line pinched, but today when i started it held right around 60psi (i didnt get a chance to check the regulator before i saw the leak) so was the high flow and then no flow caused by a fuel main relay?

LMK thanks