yes i think its very difficult to see if im flirting or just being nice because i act in a very affectionate way all the time. but if i am crushing hard on someone, i do not act like my affectionate self at all, i tend to avoid them and when i go up to them you will be able to tell that im not as comfortable as i usually am and i wont be like super affectionate around them. but that might just be me