In love with love?

So, I’ve been with my boyfriend for two years now, the thing is that during the first year and a half I was like crazy in love, the kind of thing that keeps you from concentrating on anything you try to do, because you are practically daydreaming of your SO all day long and if this person told you to go to China by feet and come back you would do it. I must say this has been the strongest crush ever, but lately I’ve been realizing that the whole infatuation part is over, I’m not saying I dont love my SO, we share many good moments, intimacy and all that, but this new feeling, the fact that I can actually do my life without being stupid crazy in love kind of confuses me. It’s true that this way is better since I can “do my life” , but im scared I might meet someone else and then go into the crazy phase again, then over it and then someone else all over again.. I guess I’m scared that im the kind of person that is in love with the feeling.
So has this happened to you? If so, what did you do to make the current relationship going on?
I do love my SO, and want to make things work.