OP, you must first understand the very important difference between PRETENDING and ROLEPLAYING, which admitelly not many people do.
PRETENDING is when you imagine that something happens, some consequence for your actions, a reward or a word spoken that doesn't necessarily actually happen, you just think it does.
ROLEPLAYING is when there's something in the basic rules that acknowledge your decisions and options, some tangible consequence to them that does actually happen. Basically, it's when the fluff and the crunch intersect.
In Tabletop RPGs, Pretending is when you assume that the village is grateful after you slew the troll. It makes sense that they'd be so but if there's nothing that ties it to gameplay, it's just pretending. You might as well pretend that the blaksmith's daugther, Thick-Lips Laura, will spend the next month dreaming about your big muscles as you save her from the troll and it's just as plausible and affects the game as much as the townsfolk being gratefull.
Now if your GM keeps track of your reputation and counts this as an increase, that is already gameplay and therefore Roleplaying, even more so if you can cash in on the reputation later on and ask for favours.
To put it more simply, you can say that your character charges into battle with a mighty roar and that's just pretending. Cool, but it's just you pretending it. But the moment the game acknowledges your charge and gives you a +1 to attack, it's now roleplaying. This seems like a dumb overly strict definition but if you want clear definitions, that's where you start.
Related to videogames, you can actually roleplay relationships with characters in Morrowind\Oblivion to some degree since there's a Disposition stat that you can affect in several ways and the game reacts to it, like Dunmer starting with lower disposition regarding Argonians or Personality, fame and infamy affecting disposition. Skyrim makes it a lot harder since relationships are much more simple and Fallout 4 goes full retard.
You can also see in Fallout 1,2, 3 and NV that roleplaying a character begins with your stats defining who you are. They alone don't make your character, what they mean does. Are you a slow, ugly lumbering behemoth? Are you a weak but charismatic and perceptive young women? Are you a fast cowboy with a deadeye accuracy? You can pretend to be any of those things but it's only roleplaying the moment the game recognizes that with it's stats, which is why Fallout 4 is bloody terrible in that regard.
Or for something similar but in the other way:
You can consume an item of food and a drink every day in any TES game to pretend you're having a meal but you're just pretending that you need to eat.
People install "survival mods" so hunger and thirst become rules to play with and so those elements become something they can roleplay around. If you're just pretending, when faced with a situation where you can still bread from a beggar, you can choose whatever option you feel like with no consequence, while when you roleplay, there's always consequences for whatever option you make and it's up to your character to decide based on his situation.
Anyone replying to him past this might as well invite him for some reach around because that's the most hetero thing you're gonna get out of him.