Put the comma in the correct spot.

In a lot of ways, living with Charlie was like having my own place and I found myself reveling in the aloneness instead of being lonely.

In a lot of ways, living with Charlie was like having my own place, and I found myself reveling in the aloneness instead of being lonely.

In a lot of ways, living with Charlie was like having my own place, and I found myself reveling in the aloneness instead of being lonely.