Whoa wait Foxy and Bonnie dated at some point? what about Freddy?
Not all of the FredBon incarnations were in romantic relationships, so of course its plausible for them to have....explored in some regard
The only FredBon incarnation that is like, actively a couple is the Glamrock variants. The others were either friends, acted as siblings, etc. The bear and the rabbit are always a duo, but what kind of duo is typically never the same.
Its part of why Bonnie was uncomfortable at first with Freddy's feelings, cause he didn't know what was real or what was programming. Though Bonnie doesnt recall much of his past "lives" so he wouldnt really have know of his past with Foxy either