No, here is the way out. RELAX RELAX RELAX. oNCE you are relaxed, talk to her about her and when you feel you make a mistake - like you dont how to end the conversation, just be open - like - "well, i am not good at ending phone calls...." - she will be happy that you feel free to open up to her. If you open up, you find that you relax and life becomes easier for you on the phone
