There is this girl (Carla) I just literally got with, and there is another (Annie) that likes me. I was pretty damn sure that Annie had a boyfriend after saying she did, so when she started coming on to me, I played along with her thinking it was a joke.
The only real friends she has are Carla and I, so I have no idea how to let her down, because talking to us two would be very depressing and she hasn't really got anyone else.

Please, if you have any help to offer, I would really appreciate it.

Thank you.