So my (26 cis female) girlfriend (30 trans female) has been weird about sex recently. She says she doesn't wanna do the same old thing every time (understandable) but when I asked what I can do to spice things up she says she doesn't wanna tell me what to do. She wants me to just try things. She specifically told me to watch porn and figure something out. She told me she thinks its awkward to communicate what she wants. I know she wants penetration but as a cis female, idk how to make that work. Ive only been with cis hetero men up until her and none of them even wanted me to LOOK at their ass, let alone touch or eat it. I guess I'm looking for pointers? How does one eat ass? I dont want to rely on porn, its wildly inaccurate. I just want to please my girlfriend and make sex enjoyable for both of us. Any help is appreciated!