My Dos & Don'ts, by Gabrielle Union

A few Valentine's rules about love (and life) from the star of BET's addictive new show Being Mary Jane. As told to Laurie Sandell.

A few Valentine's rules about love (and life) from the star of BET's addictive new show Being Mary Jane. As told to Laurie Sandell.

"I was a terrible wife," says Union. "It was my way or the highway." From her 2006 divorce, she's learned to give and take.

If you were to grade yourself on your relationships, how would you do? Gabrielle Union, 41, who plays a hotshot news anchor looking for Mr. Right on BET's new series Being Mary Jane, says she'd give herself an S for "satisfactory." "I'm divorced!" she exclaims. "So I can't exactly give myself an O for 'outstanding.'" But she has gathered a whole lot of wisdom from her failed marriage, kick-ass girlfriends, and long-time romance with Miami Heat superstar Dwyane Wade. Here, she spills her rules for a happy love life:

DO forget your "type." It worked for me. When I met Dwyane, his "résumé" looked like crap: athlete, going through a divorce, nine years younger than me. None of that screamed, "Let's have a lasting relationship." Then, after I had a heart-crushing breakup with yet another immature jerk, I thought, it can't be any worse if I date a fetus. Let's just see what happens. Turned out he'd been on his own since he was 15. He had wisdom that comes with facing an insane amount of adversity. He's sweet, funny, honest about his shortcomings. When I put my preconceived notions to the side, I found someone cool.

DON'T put up with a friend-versus-boyfriend tug-of-war. Some friends act possessive and say, "You're not spending enough time with me." Huh? Remember when we made our vision boards and the dude was in the middle? You're supposed to be happy for me. Thankfully, my girls are like, "High-five!" And D likes to be around them too. If there's weirdness, either something's wrong with the friends—or the boy. Investigate. And sift accordingly.

Union with her fiancé, NBA's Dwyane Wade of the Miami Heat

DO show him your feelings. Daily. Dwyane generally gets up before I do to go to the gym, and he's never left without kissing me and telling me he loves me. As for me, I am complimentary to the point where I am almost a little Chester the Molester-y. I think he's so delicious. Watching him get out of the shower never gets old. Never. It's not like he ever wonders what I'm thinking, but usually he's thinking, She needs a cold shower!

DON'T write off an ex (or get back together) without really thinking it through. When you're debating whether to go backward or forward, you have to look at the original issue. [When Dwyane and I broke up briefly in 2013], it was because of distance and scheduling. I finished filming the show, then I flew to Vegas right away to start shooting Think Like a Man Too. I couldn't take time off, and I missed some quality togetherness we desperately needed. Over the summer, I reassessed priorities. I'd always wanted an awesome career with back-to-back projects, but I realized I wasn't willing to sacrifice my relationship for it. Moving forward, I decided my work schedule has to make sense for our family. Bottom line: If an issue's a deal breaker, it's a deal breaker. If your relationship isn't something you're willing to give up and you can compromise, do so.

__ NEXT: When to Let Your Guy Off the Hook »__

Single and don't want to be? "Yes, the wait can be scary," admits Union. "But the right person is worth the wait."

DO let your partner off the hook. I play Words With Friends at night, and often I'll fall asleep before I've had a chance to say good night. In the morning Dwyane will say, "If you're falling asleep, say good night. I don't like how it makes me feel when you don't." Then he's like: "But we're not going to make this a 'thing.'" He lets me off the hook, and I do the same: Is it annoying that he refuses to put the cap back on the toothpaste? Yes. But at the end of the day, I just screw it back on myself. It's a give-and-take.

DON'T rush into marriage out of fear of dying alone. I got married at 28 because my friends were getting married, starting to have kids—and, in my mind, 26, 27 was old. I thought, I'd better jump on this because soon I'll be 30 and an old maid. And I chose wrong. You can't go by what your friends are doing or your family is influencing you to do. Think about this: Worst-case scenario, do you want to give this fool half of your money? As the person who had to write the check at the end of my marriage, had I thought about that, I'd have put more time into choosing the right person. And, yes, the wait can be scary—that feeling of "Am I always going to be watching TV alone, cooking for one; is my best friend my only real soulmate?" But the right person is worth the wait.

DO indulge your inner freak. Sometimes my girlfriends will mention sexting or certain positions as something they'd do only with a guy on spring break. They'll say, "You don't do that with someone you love." And I'll say, "That's who you're supposed to do it with." If I can do this awesome, amazing thing with some dude I met at a bar, why wouldn't I be able to do it with the person I love? If you're into it and he's into it and it's legal enough that the police aren't going be involved—then go for it! Do it. A lot.

And Now, Gabrielle Answers Our Dos and Don'ts Questions:

Being Friends with an Ex: Do. "As long as you're not doing it to 'know you still got it' or to keep a cord attached in a Break Glass in Case of Emergency situation, it's OK."

Nitpicking Him Over Nothing: Don't. "If he says the sky is blue, and it might be more of a turquoise, it's f--king blue. Don't do the weird belittling thing. That stuff blows up."

Talking Babies Early On: Do. "If you really want a family, and the guy cringes when you bring it up, you're not in the same place. Maybe he'll get there, but you can't pooh-pooh that shudder."

Keeping Your History Quiet: Don't. "My 'diddles' are documented, so there's only so much lying I could do, but I believe in full disclosure. No weird secrets. Let the chips fall where they may."