I want to be friends and stay professional overall, while tapping into potential with the guy I like
These things are not really compatible. The sooner you learn that, you will have a lot less workplace drama. Your professional workplace should not be a dating pool. There is no reason to exclude the other women. Who cares if one of them lied? Are you the moral police? Just chill, and let people do what they want. You don’t need to control the situation.
I guess I don’t understand this “professional career oriented program.” Is it like a grad school? Is there a good chance all or some of you will end up working with each other at the same employer later? There should be lots of other places to find a partner. You must have some kind of social life outside of this program, right?
Dating is hard, but breaking up in a mutual way where both people can still respect each other is even harder. Imagine the drama there will be after you’ve dated a few people from this group. People in the program may take you less seriously because they think you’re just there to find dates. But this is your career. Shouldn’t you take it seriously?
If you really want to date someone there, you can, if you’re smart about it (and make sure it’s worth the risk, not just for any passing crush). But don’t try to manipulate the whole group in order to do that. Don’t use the chats to try to get close to someone. Do any non-professional stuff outside of the program, away from the others. Don’t bring your relationship drama into the program, especially if the relationship ends. Think of all these rules as practice for how you will need to act professionally in your future career. That’s what this program is for, isn’t it?