Suppose that you’ve just gone out on a couple of dates with someone. You’re at that in-between stage where they aren’t quite your boyfriend/girlfriend yet. Furthermore, you’re not sure what the other person thinks of you - maybe they’re already deeply in love with you, or see you as just friends.
Now, you’re in some setting - say, with family or friends - and then someone suddenly asks you, in front of a lot of people - “So, is this your (boyfriend/girlfriend?)”
How would you reply?
If you say “Yes,” then you run a risk, what if the other person doesn’t feel that way about you yet?
If you say “No,” and the other person had been thinking all along of the two of you as already a couple, then you might torpedo the relationship right then and there.
Saying “Maybe” is just lame and indecisive.
Which would be the better answer?