OP, I'm wondering if you're happy in your relationship? What struck me about your post is that you're concerned you might be missing out on experiencing love in a particular way - but not necessarily that you don't experience love in your current relationship.
I know that our society is permeated with the idea of romantic love - every Cosmo quiz, movie, book, horoscope is filled with the breathlessness of it. And unfortunately, most of what's out there is someone's idea of love - not the real thing. The idea that someone else "completes" you is really just a theatrical device. Feeling deeply connected to another person, when you can be yourself, when you can be open and honest, and trust each other - that's intimacy. Intimacy is what most people describe as true love - and it's not automatic, or primal, or easy, like romantic love. It's takes a lot of hard work, and dedication, and commitment. Oddly enough, before you can establish intimacy with another person, you have to be "complete" all on your own: healthy, open, healed, etc.
Anyway, I'd hate to see you devalue the relationship you have because your relationship isn't measuring up to something in a magazine. I encourage you to give some thought to the following: if you had never been exposed to the idea of romantic love that you're using to measure your own relationship, would you be satisfied with the relationship you have? Just a thought.....
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What you feel is what you are and what you are is beautiful...