'A guy ordering dessert on a date is a red flag for me,' Twitter user said in recent tweet. That's the odd, roundabout conclusion one Twitter user came up with in a bizarre tweet thread about what they consider 'red flags' while on a first date. We know there's a lot of things that mean a person is gay ( having a physical, romantic, and/or emotional attraction to someone of the same sex being the primary and most obvious thing), but did you know that one of those things includes something as mundane as.ordering dessert?