Husbands study group

My husband is away at the police academy. He spent from like 7:00-10:00pm with some other people there studying. I asked him a few questions about the study group and it turns out it was just him and two girls and the study session just turned into a gossip session.

I absolutely trust him and I know he befriends people (of either sex) easily.

So why do I feel yucky about this?

ETA: it’s an academy with people from all over the US and apparently these two women are from his hometown (NYC area) so the three of them there have that in common