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Empathize. Lean on him for emotional support. Appreciate his thoughtful side. Temper your words. Make a considerate gesture. Don't play the jealousy game. Deal with emotional problems immediately. Look for signs of affection.
Become an expert on his moods and emotions. Cancer men tend to be among the most emotional, sensitive zodiac males. If you can master the ability to decipher his moods and react accordingly, you can find your way into his heart rather quickly.  When he feels distressed, ask him about what's wrong. If he hesitates, let him open up at his own pace but make it clear that you are willing and eager to listen. When he's not actively unhappy, keep him laughing. The typical Cancer man loves to laugh, so a woman who can keep him smiling will seem very appealing. Drop your guard and let yourself be vulnerable in front of him. Most Cancer men are fully capable of supporting you emotionally and actually appreciate having the opportunity to do so. Confide in him about your secrets. Turn to him first when you've had a bad day. He craves empathy from those he cares about and yearns to return it. You'll need to appreciate his thoughtfulness towards you, and you'll also need to accept and encourage his thoughtfulness toward others. Even though most Cancer men are loyal, there can be times when they'll prioritize helping someone else over spending time with you. Don't be surprised if he rushes to the side of a sick friend or offers to assist a neighbor with a difficult task, even if it means canceling a night with you to do so. His sense of obligation can take over at inconvenient times, and you'll need to learn how to tolerate that. Healthy arguments can be beneficial, but lashing out or spouting spiteful insults won't be. If you attack his weak points through your words, you may cause him to put up a barricade between you and his heart. He might be more sensitive to criticism than most, so comments that cut him down will cause him to withdraw. You can bring up constructive criticism or concerns when needed, but stay away from criticisms that do nothing but insult him. When your Cancer man can feel how much you love him, he might be more likely to fall in love with you in return. Do something nice for him without having a reason. A little well-timed kindness can go a long way.  When you say "I love you," make it meaningful, passionate, and genuine. Don't say it just to say it. Gifts that remind him of your relationship can be especially effective. Think photo albums, love poems, and trips to sentimentally significant spots--like the place you first met, for instance. Gestures that nurture are also a plus, so you might try giving him a home-cooked meal or a hand-knitted scarf. You might be tempted to make your Cancer man jealous by flirting with other guys, but doing so will inevitably work against you. Most Cancer males tend to lean on the possessive side, so they can become jealous quickly and don't handle the emotion well. No matter who feels hurt—you or him—the two of you need to sit down and iron out your emotional difficulties as rapidly as possible. His negative feelings probably won't vanish on their own, and he may also expect your negative feelings to linger until resolved.  When he feels hurt, he may withdraw from you until you offer him an honest apology. On the other hand, if you withdraw emotionally, he can become clingy and demanding. The only way to calm him down is to open your heart back up and make amends. Since Cancer men tend to be so sentimental, you might know when he has fallen in love with you before he even says the words. Watch for a shift in his behavior. If he becomes notably more affectionate towards you, his heart may very well be yours.  Increased levels of affection and consideration are good signs. If he does a lot of hugging, asking about your day, and sensing your moods, he might be falling for you. Similarly, if he withdraws or seems notably hurt when you upset him, it could mean that he has become emotionally attached to you.