No, no. I will not be the Project Leader because I rarely ever have enough motivation to start anything.
I didn't do 50% of the work. Its not really the amount of work done that decides who contributes more to the project. I personally feel that its the one who starts it, dedicates lots of time to it, and keeps it going. When you weren't around, the project didn't really progress. Therefore, you are the project leader for a reason