I Am Insecure About Myself

I recently met a new guy (that I mentioned in a previous post) and I keep having emotional ups and down about it.
I get super excited when he messages me, when he puts cute emojis in his messages, etc. I feel hopeful about our “relationship” possible evolving into something more.
Yesterday he invited me to play videogames with his friends. I was super excited about that (but also really scared), because him inviting me meant he likes me and wants to spend time with me, right?
But I keep feeling insecure about what if he just likes me as a friend or if there's hope for something more. We met on okcupid by the way, so my intentions were to find a long time partner and me talking to him means I intend to emotional invest in him. But he still often shows up online in the app. I don't feel he's a player, he looks like a genuine cool guy so what worries me and gets me insecure is what if he only likes me a friend and is still looking for someone else as a partner. I'm scared of investing too much of myself in him and or getting too attached to him (unfortunatly getting attached is something I do too often and quickly...). Or rather, I'm scared of getting hurt because of it.
Am I dumb for feeling this way? Am I exaggerating with my feelings?
I just feel so confused in all of this, not knowing where I stand. But I don't feel comfortable asking him about it because I'm scared I'll look psycho and scare him off.