Can someone help me with my problem?

Hi, so me and my ex girlfriend of 8months broke up about 2-3weeks ago, and i still have feelings for her, but i am trying to move on, so i go to a bonfire with a couple friends and this girl named Kendra is there and shes nice and pretty and after a little bit i told her i liked her and we kissed and made out that's it, then just recently Ive been hanging out with this other girl named Toni and i really like her and she really likes me and i am taking her on a date tonight and i don't know what to do because is i go for one the other will be hurt and same with the other way around and i just don't know what to do please help me!