Passion is described as an enthusiasm, or desire for something. So if you think that you and your love one have lost the passion in bed, don't worry because that passion can be rekindled.
Msn Life and Style has 15 ways to relight the sexual passion.
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Chase the Monday blues away
Surprise him by getting naughty on a Monday morning and watch his passion rise on new moves in bed. Catch your partner off-guard with your kisses, touches and caresses.
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Turn back time!

Not a fan of dirty talk? Then take a stroll down your sexual memory lane and think of the time when both of you had a lot of fun in bed. Recreate experiences in the past, tell him what u liked and make him do it again.
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Get book smart

Buy a book about new sexual positions , and read it with your partner. This way both of you will learn about new ways to spice up your sex life and, who knows, you will get turned on at the same time!
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Role playing

Imagine interesting scenarios or pick real-life sexy couples to role play as, and just let your imaginations go wild! Try out sexy characters like the French maid, the nurse or the hunky Latin pool boy.
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Embrace the kinky

If you've felt a lack of passion in the bedroom recently, kinky might be the way to go. Play around with blindfolds, handcuffs, or even some ice cubes.
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Body map

Draw two figures on separate pieces of paper and then mark the areas on the body where you would like to be caressed. Then, you and your partner should exchange the notes, and proceed to the bedroom with your new knowledge.
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Change places and positions

You probably have a few favourite positions as a couple, which makes sex easy but also boring. Try out new positions and have sex in different places. Have you tried getting it on in the bathtub, kitchen or dining table? If you haven't , now's the time to try all of it out.
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Quickies

Sex doesn't always have to be long. Sometimes, a quickie will excite a couple when they know they don't have that much time to be intimate or the fear of getting caught can also turn you on.
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Eating in bed

Prepare a plate of aphrodisiacs to share with your partner in bed. A simple choice would be for example bananas. They are rich in potassium and vitamin B, which are necessary for sex hormone production. Truffles, the musky scent is said to stimulate and sensitize the skin to touch. Wine as it relaxes and helps to stimulate our senses.
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Work your fingers!

As you lay in bed, give each other massages. It could be a foot rub after a long day of work or a back massage to keep each other relaxed and tension-free. This way, you and your partner would be physically close to each other and it could be foreplay to a night of passionate sex.
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Be flexible

Being flexible can enhance your sex life by making it easier to get into different positions, especially if you're trying out new ones. You can train your muscles to be more flexible by stretching after your workouts or incorporating yoga into your exercise routine.
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Slip it off

Perform a strip tease for your loved one. Have sensual music playing in the background, flirt, tease and sexily move your body to the rhythm while you slowly take your clothes off. The anticipation of seeing the rest of your body will turn him on.
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Play date

Who says board games are boring? Sex-related board games come in so many varieties nowadays, so get one and play the game with your partner. And to make it interesting, the loser gets to be the "sex slave" for the evening!
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Whisper dirty words

Tempt your partner by describing your feelings in bed when there is intimacy. Play out your fantasies. Softly whisper what you are going to do to each other and show your partner that you are willing to pleasure them.
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Foreplay

Foreplay enhances sex as it gets you excited and anticipating. You might want to try caressing, kissing, and undressing each other. This would arouse you and your partner before having sex.
Passion is what you and your loved one share personally; it is an intimacy that that needs to exist constantly in a relationship. So if you feel that the sexual intimacy has disappeared in your relationship, then it's time to relight that fire.