Hi Kala ~ I appreciate your wanting to have a better relationship with your mother. I too had problems for a long time with my mother, but it was due to my childhood, and the fact that both parents were alcoholics. But that's another story.
Anyway -- don't you think that your relationship would be better if you didn't share every single INTIMATE detail of your life? Our parents are NOT comfortable with hearing these kinds of things, and in fact we should NOT share our intimate parts of our life. It's none of their business! Just as THEIR intimate life is none of OUR business.
Would you like to hear of your parents intimate life? I don't think so. Most children would go "ewwww." Wouldn't you feel uncomfortable thinking of your parents in bed together? Well, our parents feel uncomfortable hearing of their children in bed with whomever!!! They don't want to hear of it.
They may not even want to hear that you're bisexual -- or of your girlfriends or boyfriends.
Maybe you don't tell them alot, but from your post it sounds like you're quite open with them. I don't think you need to be THAT open with them. It's really none of their business. Your relationship will be alot better if you cool it some and leave things to generalities. You can STILL have a great relationship without all the details.
I wish you the very best! I hope things go well. Take care & God bless. Hugs, Lee