Before I got married for the first time at 51, I thought I knew what true compatibility was: connecting on a mind, body, and soul level. If we connected on enough levels, we were compatible. Compatibility meant we had potential, possibility, maybe even a real shot at love.

Everyone has their own definition of compatibility, it’s a very personal thing. But what I learned after being single for so many years (and suffering through so many boyfriends and breakups) is that there’s more to compatibility than meets the eye.

Here’s what I’ve experienced:

Compatibility starts with great chemistry.

You get along, have fun, laugh, feel comfortable, and have great energy and attraction for each other. The conversation is lively and the communication flows. Your personalities mesh, you get each other, you’re in alignment, and vibrate at the same frequency. I knew I was compatible with someone when nothing got lost in translation when we talked.

Having common interests make you compatible.

You enjoy the same things: i.e. going to concerts, binge-watching shows, working out, or volunteering at the animal shelter. Or maybe you like doing nothing at all because you just dig each other’s company. I’m a big sports fan—playing, watching AND betting–so dating someone who shared my passion was a plus. Having similar dislikes also makes you compatible—like sharing a mutual disgust for pineapple on pizza.

Sexual compatibility counts for a lot.

Generally, you have the same sexual tastes, desires, enthusiasm, and sense of adventure or experimentation. You know how to read and please your partner. You’re both respectful and unselfish. Doesn’t matter if you love sex or hate it, if you’re prude or a perv, you’re always in synch. When you’re sexually compatible, everyone’s needs get met.

SIDE NOTE: I once had a boyfriend who hated oral. We eventually broke up, not because he wouldn’t go down on me (which was a problem) but because we didn’t see eye-to-eye about the future. He wanted one, I didn’t.

There’s compatibility if you go at the same pace. 

Both parties are in rhythm, going at the same speed, and have compatible attachment styles. No one is pushing or pulling, prodding or pressuring. Nothing feels forced, rushed, or fearful. You’re just two people enjoying the ride—neither going too slow or too fast, or holding on too tight.

Sharing the same values/political beliefs makes you compatible.

Opposites do attract (Hello KellyAnne and George Conway!) but being on the same side of the aisle can help. Like sharing the same beliefs on policy, religion, healthcare, women’s rights, etc. When you’re sympatico on the issues, you know someone’s core, and you’re united in your views. Especially in this day and age, dating someone who’s politically like-minded seems more important than ever.

P.S. KellyAnne must be a dynamo in the sack, because I personally don’t know how they stay married. Same goes for Mary Matlin and James Carville.

As I said, I thought I knew what true compatibility was, but now that I’m married, I know why past boyfriends lead to breakups. It wasn’t lack chemistry, or great sex, or politics, or pace, or mutual love of sports betting. I had all of that.

We ultimately weren’t compatible because we didn’t have the SAME GOALS OR VISION OF THE FUTURE when it came to commitment.

It doesn’t matter if you’re fuck buddies, or want to live happily ever after as husband and wife, you’ve got to be on the same page. You’ve got to want the same thing for the thing to work. That’s what will give you and your partner staying power, regardless of your arrangement.

You can have all the fun in the world, but if you’re not going in the same direction, you ain’t going anywhere.

Plus, when you share the same goals, or vision of the future, you’re not just compatible, you can overcome pretty much anything—except maybe bad oral sex. Or in my case, none at all.