Confess To Your Crush

I've been thinking about this for a while and I've decided I need to confess (again). I confessed when i first had a crush on him, before we became friends and it was a more nonchalant thing. He said he didn't want to date someone he was friends first.
Over the last 2 years, we've become friends (mostly through mutuals and group stuff). I realized recently that I have feelings again, which are definitely more serious. I was told by a mutual that after we hung out for the first time alone last week (farmers market trip), he asked his friend if they thought I still like him. The friend said it was possible, but could go either way and asked what he thought. He said he "had never thought about it before" and that he likes spending time with me. Knowing him, he probably didn't give it any more thought past that .
Even though I'm pretty sure he doesn't feel the same way, I need to get it off my chest before he graduates next month and leaves for his job. Any advice on what to say? And how I might be able to get him alone without setting off the alarms in his head?

I had my bestie bake this niche pie that my crush and i talked about liking several months ago just so i would have an excuse to ask him to come over and have some. For context, i asked him out 2 years ago and he turned me down since we weren't really friends yet. We're now kinda friends (have a lot of mutuals and are in band together). I know he's a chronic overthinker, but he's also incredibly dense lol and didn't even question the pie. While we were talking, i mentioned how his friend asked my bestie to eat dinner he cooked, just the two of them, and that i thought it was strange but she wasn't phased. We agreed his friend probably likes her. I then realized I literally just asked HIM to come over and it was just the two of us...i also waited 3 days and then asked him to hang out JUST THE TWO OF US. He once again didn't even question it and said yes and now I'm wondering if he's even catching my hints or what i should even do when we hang out... thoughts? pls help guys im crashing out I've been calling it an "ambiguously friendly hangout" but idk what he thinks this is