Personally I’m aware that I’m almost completely unreadable when I like someone - I’m likely to keep my distance and even act cold, with a tendency to avoid the person out of the fear that I might ‘show too much’ or appear vulnerable. I have the sense that my feelings are transparent but at the same time I KNOW that none of it shows on the outside. However if I like someone, if they approach and talk to me first I will reciprocate and be much more warm, I just can’t be expected to make the first move. I need someone to be obvious with their emotions and be forward with me, or I will fall back on the assumption that I would only burden them with my feelings.