As Darcy and nbumblebee have said this is a pattern that is experienced in many abusive relationships, no one is always bad they have times of being nice, kind and loving.
I have just had my month of calm and today the storm has began to blow again. It can be hard to imagine during these periods of calm that that person can be so mean or aggressive and it makes you doubt and blame yourself, maybe it’s not his fault, maybe your behaviour makes him abuse you?!
A hate the calm as much as I hate the storm because I know there will always be another storm on its way but as the others have said try and use this time to engage in positive things for you no matter how big or small. Use the time to engage with your support to make plans towards leaving your abuser when the time feels right and when you doubt yourself reflect on your logs written here or photos/notes you have made about your abuse to remind yourself that you deserve the support your support is giving you and that he is the abuser not you x