Uninviting an old friend

So i had a best friend growing up for many years we were inseparable then College happened and adult life and we slowly drifted apart. Now i feel like the type of relationship we have is happy birthday and merry christmas text. And she invites me everytime she has a bday dinner but not on a regular. We say we r going to hang out but never do. She called me several months ago and said she cant wait for the wedding and at the time i thought yeah of course why wouldnt i invite her. Now thinking of my current friendships etc we barely talk i havent even met her bf of 3 years. I already sent a save the date. Should i just keep it as it is and invite her or not send her an invitation? Help!