I love my bf but feel I’m settling…

So here’s the gist, I (28F) have an amazing boyfriend who has initiated marriage since DAY ONE! No question, no hesitation, and no worries. I knew and felt his plan to marry me since literally day one. He knew I was the one, but here’s the trick… I never had that sudden, “he’s the one” in my spirit, the second I met him. I love him to bits and feel like a future would be good with him, but not ‘great’. I don’t know. I find myself in constant cycles of, “omg what if he’s not the one? What if he’s not? But then, what if he is? Come on girl, he’s stuck around through EVERY single one of your flaws and never judged you!” He sticks around after every story I thought was embarrassing enough for him to leave, but he stayed. “He loves you genuinely”, it dawned on me, but I can’t help but think that I could have better. I HATE feeling this way but unfortunately this is my reality currently.

Please help😭