[sidebar]Love killer #1: Following the same routineVariety and surprise thwart adaptation, but that doesn’t mean you have to take up skydiving. Eating at new restaurants, socializing with different couples, and even sleeping on the other side of the bed all count. Love killer #2: Too much screen timeResearch shows that the mere presence of a smartphone can distract us, causing us to disconnect from one another. However, a simple touch can bring us closer, Dr. Lyubomirsky says. Hold hands whenever possible, and find little ways to connect, such as running your fingers over your partner’s back as you walk by. Love killer #3: Withholding praiseLook for ways to value your partner—try to notice one new positive trait each day. The more you praise him, the more he’ll be likely to applaud and be thankful for all you do too. More from Prevention: How To Be A Better Lover