Why don’t I feel like I’m in a relationship ?

My boyfriend rn, we met about a month and a half ago. And decided to be exclusive a couple weeks ago. But I just can’t internalize that he is my bf and idk why and it’s bothering me and kind of hurts that I don’t feel how I want to feel. I don’t think it has anything to do with him. He’s so nice to me, he cares deeply about me, we talk everyday, see each other most days, go on dates, hang out at home. We haven’t met each other friends so maybe that could be why???

He didn’t formally ask me to be his gf but we decided to be exclusive and that seemed like enough at the time but I guess it wasn’t in my head?? Even though I thought it was enough. But he is my bf, that title has been established so it feels redundant to ask him formally to be my bf or to have him formally ask me to be his gf. I feel so stuck. I haven’t been in a relationship in a couple years and my last one was so toxic so this healthy dynamic with him feels so new I don’t even know what to do with myself.

Any advice is welcome plssssssss