Jungian take on „nice guys”

What would Jungian psychology have to say about so called „nice guys”? What would be the best advice/ course of action?

I’ve recently realised that I’m somewhat of a „nice guy” especially around women, scared to talk to them etc, loser stuff, and now that I have a gf, things are great but I often find I’m reluctant to disagree with her, I’m very clingy especially physically, I get attached etc, I actually think I’m much more fragile to her opinion too. I’ve always been close to my mother, less with my father, I live with him now but we don’t really click like we’re meant to, I kinda avoid him and I find it hard to take advice or help from him, or even to bring something up or start a conversation with him, I think I might be experiencing something similar to the Oedipal child in „king warrior magician lover” (great book), where I have this need for female validation. Where exactly would that sort of thing usually come from? And how can it be dealt with? I’m just looking to learn more than anything, and maybe I can stop myself from being walked all over in the future :)