People will see anything in anything, all they need is an excuse. People will see the Virgin Mary in toast, Abe Lincoln in tree bark, and rape in a comic about a couple without any prior information about anything.
Folks just like to stir up conflict over everything.
People are getting their fur in a wad over nothing. You can choose to see rape in the comic, but from the general vibe of it, it's not rape in the slightest.