It’s all fluid anyway… He could have been pansexual, or demisexual (or maybe even something else really cool that I don’t even know about yet). As far as I know Speed was his only possible known male suitor.

Please note: I’m not even close to an expert on Lincoln, and this comment was based almost entirely on memory of when the History Channel used to actually show historical documentaries (plus maybe a little Drunk History mixed in).