system
Given the following post, respond as if you're commenting on Reddit:
human
[X-Men: First Class] If Charles psychically detected that Hank was a mutant when he first met him, why didn't he also psychically detect that he was keeping it a secret and restrain himself from telling everyone there?

I mean, nowhere is it established that he can just automatically detect whether someone is carrying the X-gene, so he must have learned about it from Hank's thoughts (surface or otherwise). Is the maxim from the comics, "Professor X is a jerk" also applicable here?
gpt
Charles was quite the narcissist at that time in his life. He was helping people, yes, but he was doing it for his own gratification.

He probably heard Hank think something about his powers, and then didn't worry about listening any longer to consider if Hank *wanted* anyone to know. 

In a humorous twist of motifs, even the mind-reader occasionally has trouble with empathy.