<human>: Can you give me the gist of the text in a nutshell?

I want to start off by saying that I've got pretty much zero experience with dating.  Recently, I joined a soccer meetup and my love life got a lot more interesting! There are two guys that I'm both fairly interested in, and they seem to reciprocate.  My friends have told me that casual dating is a normal thing, so I'm going to be going on some dates with both of them.

However, I can't help but feel like I should be letting them know that I'm dating other people - but I also can't think of a non-awkward way to bring that up.  And since they know each other, I feel like things could get awkward fast if things aren't made clear.  Do people usually bring that up on a first date? Or only when things start to get more serious?  And how can disclosure be worded in a non-awkward way?
<bot>: Inexperienced dater has decided to start casually dating two people who know each other.  Is full disclosure normal/necessary?