I don't want to delete my ex's nudes
Why don't you want to delete them?
She looks super hot in those pics
You really should not keep them since you are no longer together. However if you must keep them, don't go sharing them with anyone else! That would be wrong.
My gal pal wants to see them
It is wrong to share them. Those were meant only for you and you are violating her privacy by sending those. Delete those pictures and move on, that is nest for everyone.