Using body language - he might cover his mouth or brush his mouth with his hand while talking. That means he's lying or not telling everything. If he doesn't look you in the eyes while talking or keeps looking away, he's lying. Otherwise, if he has never lied to you, you just have to trust him.
A guy is sincere if he says the truth. And if he is honest.
Was Awiyao sincere in saying that if a man will see Luminay dance, that man might marry
When the guy calls back saying "leave me the hell alone, stop calling me!"
if he will do anything for you and keep all of his promises...
Move to India?
sigh Lang.
If you like a guy than wait for the right moment then you"ll know when to kiss him but dont go to far "if you know what im saying".
A more sincere response is if you really like someone and you are going out with someone certainly not just talking with a guy or hanging out. Ya that was sincere and I'm a guy! Hi this is a female talking here u need to look pretty and hot for boys to spot u I have one at school and he is inbthe same year as me in year 7 and u need to pick one u love in the same year as u and who was saying hi Im a guy cos hi there!
something
According to me he likes you but is afraid of saying to you
He probably doesn't know what he's saying.
The comparative form of "sincere" is "more sincere," while the superlative form is "most sincere." For example, you might say, "She is more sincere than her friend," and "He is the most sincere person I know." Unlike some adjectives, "sincere" does not form its comparative and superlative by simply adding "-er" or "-est."