1998 Ford Ranger just re charged A/C

Ok I have a 1998 ford ranger, this summer when I tried using the a/c it was blowing hot air, around 110 degrees F. Previous summers it would blow out air aroung 45 degrees F. So I bought some r134a, the gauge read 15 in the green, so I added the can and when it was done it read 35 in the blue. The temp. It was blowing was at 80 degrees F when idling, then when I started to drive it, it reached 120 degrees F. When I parked and let it idle it started dropping back to 80 degrees F. Then I popped the hood and both lines were ice cold, the one going to the cab and the line going toward the cooler was ice cold as well, what does this mean? Please help. -Bud