Gaining Weight in a Relationship: 5 Causes and Solutions Everyday Health MenuNewslettersSearch Weight 5 Reasons Coupling Up Can Lead to Weight Gain — and 5 Solutions Find out how to stick to your healthy habits, start new ones, and (sneakily) encourage your significant other to do the same. By Jessica MigalaMedically Reviewed by Kelly Kennedy, RDNReviewed: May 21, 2019Medically ReviewedNow that you're dating, you may be trading your weeknight fitness classes for movie nights in.StocksyThere are certain side effects of being in a relationship. Falling in love may give you the warm fuzzies. The birds may sing a little bit louder. And you might also see your health habits fly out the window — and therefore, gain weight. “Surveys show that people who are part of a couple may no longer feel pressure to look their best. They may eat out more frequently or order more takeout, and adopt more sedentary habits,” says Angel Planells, RDN, a Seattle-based registered dietitian nutritionist and national media spokesperson for the Academy of Nutrition and Dietetics. He points to an Australian study published in February 2018 in PLOS One that found that while couples were more likely to have healthy habits (like not smoking and limiting fast-food intake), they were still less likely to be a normal weight when compared with singles. 5 Scenarios Where Being in a Relationship May Lead to Weight Gain If this sounds like you, you can get your diet and exercise habits back on track. Even if they don’t result in weight loss, they’ll still make you feel good. 1 You ve Abandoned Your Personal Wellness RoutineYou used to eat at home and bring your own lunch to work. “Now your lunch routine may be disrupted, and you’re going out for dinner and not having leftovers,” says Planells. You’d be surprised at how caloric restaurants can make even simple dishes. Meaning: Eating out is going to lead to consuming more sugar, fat, and sodium, he says. 2 You re Unintentionally Adopting Your Partner' s Unhealthy Habits You had your eating and food prep down, and then you met your partner, and what and when you ate changed. “Sometimes eating behavior can be influenced by the new partner. You might try new foods or eat more frequently or later in the day [like them],” says Mascha Davis, RDN, who’s based in Los Angeles. 3 You re Having More Alcohol When You Go on Dates If, for you, dating means meeting for drinks, that’s okay — as long as you’re sticking to one or two drinks (for women and men, respectively), says Davis. In a phenomenon that’s been called the “drunchies,” even moderate drinking before a meal increased the number of calories eaten by 11 percent, and people reported that they were more likely to crave high-fat foods, per a study published in June 2015 in the journal Appetite. 4 You re Hanging Out More — and Now Your Fitness Regimen Is Taking a Back Seat Finding a show you both love to binge-watch does bring you closer, per a study published in September 2017 in the Journal of Social and Personal Relationships, so it’s no wonder that you two are planting yourselves on the couch now. Likewise, you may skip yoga class after work to spend more time with your S.O., so you’re less active, too, says Planells. RELATED: A Detailed Guide to Fitness — and Why It’s About Way More Than Hitting the Gym 5 You re Sharing a Bed and Your Sleep Is Suffering as a Result If sleepovers are happening, just know that you’re probably not snagging the shut-eye you got when snoozing solo. Sleeping in the same bed as your partner can increase nighttime disturbances by 50 percent, according to the National Sleep Foundation. And in part thanks to a snoring male partner, bed-sharing sleep issues are more common in women, according to the foundation. Unfortunately, lack of sleep is linked to a higher risk of weight gain, as it may affect the hormones that govern hunger and appetite, according to the National Institutes of Health. How to Get Your Healthy Habits Back on Track 1 Get Your Head in the Game and Revert to Your Old Ways If you’ve stepped off the healthy living path because you’ve been wrapped up in a new relationship, that’s completely understandable. But you can hop back on — even if your partner eats an unhealthy diet. “Just go by what you have always done and recognize that healthy eating makes you feel better,” says Ilyse Schapiro, RD, the coauthor of Should I Scoop Out My Bagel? and a certified dietitian nutritionist in the New York City metropolitan area. RELATED: 5 Tricks for Getting Enough Fruit and Veggies 2 Whip Up a Homemade Healthy Meal Together for Date Night Going out to dinner and trying new restaurants can be really exciting, but if it’s getting out of hand, it’s time to get reacquainted with your own kitchen. “Have date nights where you cook healthy meals together. This way you can still enjoy a meal together but you know what you’re eating,” says Davis. A study published in June 2015 in the journal Public Health Nutrition found that people who cooked dinner most days of the week consumed fewer calories and less fat and sugar compared with people who ate at home one or zero times per week. Don’t know what to cook? Meal delivery kits make DIY meals feel fancy. 3 Recommit to Getting Your Sweat On at the Gym Your partner may be reluctant to go to the gym, and honestly, it’s not your job to drag them there — that’s a big ask. Instead, focus on your own behavior. A study published in March 2015 in JAMA Internal Medicine found that when one partner changes their health for the better (for instance, starts exercising), the other is more likely to follow their lead. Another tactic is planning more active dates, including going on a hike or a bike ride. RELATED: 10 Amazing Benefits of Exercise 4 Hit a Restaurant With Healthy Options if You re Planning on Dining Out Eating in can be a lovely, bonding, and healthy experience, but of course you’re going to go out sometimes. Schapiro recommends having a few restaurants in your rotation that you know have healthy choices. “Look at the menu prior to the date so you can plan ahead. It’s easier to make healthier choices with a plan in place,” she says. 5 Encourage Healthy Eating Habits for Your Partner Gently If you’re a vegetable lover but your partner isn’t, you can let your preferences rub off on them. Maybe skip those they may balk at (like kale) in favor of friendlier picks. “Get creative. Cover broccoli with cheese on top instead of mac and cheese or make buffalo cauliflower,” says Schapiro. “The more exposure they have to healthy eating, the more it will rub off on them,” she adds. NEWSLETTERS Sign up for our Diet and Nutrition Newsletter SubscribeBy subscribing you agree to the Terms of Use and Privacy Policy. 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