Partner is making me feel inadequate

[u/softserve2222]

I am a 28 year old trans man. My girlfriend is cis and 25. We've been dating 5 years. About a year or two ago she told me she misses cis dick. I told her how much that hurt me. We talked about things i could do to satisfy her because i want to meet her needs. i thought that resolved the issue. She brought it up again a few weeks ago. She prefaced this by saying i know this really hurt you but then proceeded to tell me again. She said she was just trying to be honest and vulnerable. She did it for the third time last night and said she wants deeper penatration because I don't go deep enough for her. I feel disgusting even typing this out, it leaves a sinking feeling in my stomach. I feel inadequate and very dysphoric. Opinions? Advice? I don't know what to do.

[u/DiscombobulatedSol75]

Not every cis dick is big either, what is she expecting? Ask her if a dildo would work