What Do I Do i feel so sad?

well me and my best friend have been through such a bad patch recently and i have been acting like a moody so and so although we still close but she said that she never wanted to talk to me again although to my cousin who she was talking to she didnt say one bad word about me she said she just lost it and didnt mean to say it she still called me by my name which is becca but she shortens to bec i just dont no what do to i have said im sorry for what i have been like i just dont no what do to i lovee her sooo much coz shes my best matee what can i do