Casual Sex & Feelings

So I’ve been single for 6 months and casually slept with 3 people in that time.

Guy 1 I fell head over heels for but he was very invested in my and wanted to take me out all the time and we saw each other everything single day and only actually slept together 2/3 times so I guess it wasn’t so casual.

Guy 2 was the worst I’ve ever had and I forgot about it straight away and have never given the guy a second thought.

Guy 3 is where it gets messy. We’d spoken briefly a couple times in person and we’d messaged a few times too, then he randomly invited me to an evening out in the city with some friends, we get drunk, go back to mine and one thing lead to another. I now think I have feelings for him but I don’t know where I stand or what he wants. He a super nice guy, proper gentleman and I honestly wouldn’t mind taking things further and getting to know him more, I can’t stop thinking about himmmmm. We hardly spoke before and we’ve hardly spoken since but god damn he’s gorgeous. I’m not sure if he’s just a nice and friendly guy though?

Advice?