I've been in another relationship for almost a year. I don't love my current bf the way I loved my ex uPBD bf.
Sounds to me like something in your current relationship is missing, which is making you reflect on your ex.
When I was dating after breakup with my ex, each so-so or unsuccessful r/s made me go back in my mind to my ex. The more I dated, the better it got, but it never fully disappeared. Until I met my now-husband. He was everything I wanted and needed - I felt completely fulfilled in every way - and had no reasons to think back of my ex. As a matter of fact, as our relationship progressed, it only made me realize more every day how unhealthy my old r/s actually was.
So now - back to you.
How much have you actually dated before meeting your current b/f?
Why did you choose to be with him?
Have you done any therapy for yourself, to make you understand yourself, your history (why you chose to be with your ex in the first place), and what it is you want and need in a man going forward?
I doubt I ever will love someone like that again.
You are right. If you do the work on yourself (therapy) and if you meet the right person for you - you will realize how what you had with your ex was not even real love - and you will love your new someone a hundred times more