2 for 1

I am doing something right now that I said I would never do: dating two guys at one time. I always knew of girls who dated more than one person at a time and I never knew how they did it. I always told myself that I would never do that because someone would wind up getting hurt and I just didn't think I had it in me to do it. I got into this situation somewhat by accident. I didn't mean to put myself in this situation.
One relationship branched from friendship and turned into him and me hanging out quite a bit each week, which includes us going to dinner and even taking our dogs to the park together. The other came from us meeting through mutual friends.
This is so stressful and I still don't understand how some people can do it. I am so confused by my feelings and the guys' feelings. I am scared because I don't want to get hurt, but I don't want to hurt anyone in the process, although I am fully aware that this is impossible. My brain is going crazy with trying to decide which one I want to be with. One day a I really like one and then the next I really like the other. Both of them have such great qualities, but they are both so different. I wish there was some wayto mold them into one and that would be the perfect man for me.
I know that I need to make a decision some time soon because if I don't I am going to end up with neither.