According to the study, people who are married or who are in close, healthy relationships tend to be less likely to smoke, are more physically active and are more likely to have a well-developed social structure. They are also more likely to have lower levels of stress and anxiety in their day-to-day lives, the study added.

"There is a theory that people who are in loving relationships may experience neuro-hormonal changes that have positive effects on the body, including the cardiovascular system,"  study conducted by Vanderbilt Heart and Vascular Institute cardiologist Julie Damp said.

The cardiologist also said giving your loved one a box of dark chocolates and a bottle of red wine won't hurt either.

"Dark chocolate has been shown to be associated with lower blood pressure, lower blood sugar levels and improvement in the way your blood vessels dilate and relax," Damp said.

 "Fat and calorie content of chocolate also needs to be taken into consideration and kept consistent with a healthy, balanced diet," She added.

However, Damp cautions that there is not enough evidence to encourage people who don't currently drink to start drinking. There are potential negative health effects of long-term alcohol use, and the flavonoids found in red wine can be found in other food and drink like fruits and vegetables and grape juice, she said.

"A good message is that these things should be done in moderation and in conjunction with your physician's plan for you to lower your cardiovascular risk," Damp added.

So, this Valentine's Day surprise your loved one giving a box of dark chocolate and a bottle of red wine to keep his/her heart healthy.

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