Conversing with new acquaintances… was difficult. Especially for Felix, who wasn't a social butterfly to begin with, and lacked experience. Not to mention, he was also not the most trusting… Even though he felt that the three Omegas approached him with neutral, if not positive, attitude, he still couldn't help but be a bit doubtful. They were most likely assessing him now. If their conversation didn't go well, there was a chance they might decide not to ally with him…
He was simply far more used to negative attention from others, especially Omegas, which is why trying to form alliances, he felt so out of his element.
And the Omegas either noticed it, or perhaps just achieved what they had set out to do with Felix that evening, because after a short conversation, once the topic of the studies had run out, they excused themselves, returning to their seats.