Is it normal to feel less excited in a stable relationship?

So I'm 26, dating this guy who's also 26. We met a few months ago and hit it off immediately. Began dating exclusively after like 2 weeks of knowing each other and he ended up staying the night at my place TWICE before we ever even kissed.
So it was a but of an unconventional start.
Since then, we've spent a lot of time together and he makes me feel more wanted and that I'm more worth his time than anyone else I've dated ever has.
I thoroughly enjoy hanging out with him and the relationship already feels very safe and the communication is great.

BUT I'm noticing that I'm almost a little bored and I think it's because I'm used to dating either traumatic men or just guys that don't make any time for me and kinda hover that over me. I feel like now that I feel safe and like he wants me, it's unsettling?

Absolutely no intentions of leaving this guy. He's wonderful, the sex is great and we have a similar sense of humor. It's just an odd observation I've made and wonder if anyone else relates?
Updates
+1 y
Also to clarify, I am and have been in therapy for this and various other things.
Its like I've been conditioned to being anxious in every relationship and I'm finally not in this one and it's wonderful. And also confusing.
Is it normal to feel less excited in a stable relationship?
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