Valentine’s Day is just around the corner — and it’s time to show the most important person in your small business some love — your customer.

Sure your relationship was exciting at first. You were thrilled to see that new someone. You went the extra mile in service, wooed with sign-up bonuses and introductory offers. But after a while, you started taking your special someone for granted. After all, sometimes he or she would bother you in the middle of your workday, make a demand, ask for attention.

And now, your relationship with your small business customer is in a rut.

But don’t despair. This Valentine’s Day, you can fall in love again with your customer. And you can rekindle the love your customer feels for you.

What’s the best way to keep customers in love with you — and keep coming back? Customer service.

In a small business, you’re rarely competing on price. Your customers have chosen you in large part because they like the way you make them feel — that they’re taken care of, that you know who they are, that you have a relationship.

That makes customer service in small businesses so important.

Some small businesses assume they’re doing just fine if they don’t get many complaints. That’s an unreliable measure. The unhappy customer who does not complain is almost certainly a lost customer.

These days, unhappy customers can do you a lot of harm. They can spread their disappointment through social media and review sites like a virus. At least a customer who complains gives you a chance to make the problem right.

So, it’s your job to make certain that customers have little reason for complaints. Training all employees — from the shipping clerk to the sales representative — in customer service can pay off handsomely for you in customer retention and referrals.

Build sufficient flexibility into your policies so that you can easily handle unusual or difficult requests. Empower employees to make certain decisions on the spot (such as accepting returns) instead of requiring each customer request to be approved by a manager. Make it easy for your customers to let you know what they want, by soliciting customer suggestions and feedback.

For some small business owners — and their employees — the first step in providing great customer service is an attitude adjustment. Approach interactions with customers as a means to nurture the relationship, not just to execute a transaction.

If you want your customer service — your customer relationships — to last, remember these four keys to great customer service:

1. Be honest about everything. Honesty is not only the right thing, it also directly affects your ability to make sales, retain customers, and (ultimately) stay in business. If you cheat, misrepresent or overcharge, expect that all to show up quickly on online review sites.

2. Promise only what you can deliver. This has a direct effect on customer satisfaction and how you’ll be rated. It’s much better to underpromise and overdeliver than to oversell and overhype and then disappoint your customers.

3. Follow through with commitments. If you say you’re going to do something, do it. Period. If you promise to be available 365/24/7, you had better make sure you’re available on Saturday nights and Christmas Eve, too.

4. Make it easy for customers to contact you. When you have an unhappy customer on your hands — and no matter what you do, eventually you will — you don’t want to frustrate them even more by not being able to get in touch with you. Provide an online contact form, phone number or an email address and be responsive. Regularly check for inquiries posted on your Facebook, Twitter or other social media sites.

Good customer relationships, like any relationships, take attention and care. If you neglect your small business customers, they’ll forget about you. So on this Feb. 14 — and every day — show your customers the love and the great service they crave.