Recent study shows that if people yawn immediately after you do,
They might actually Like you

If you yawn and the person next to you follows suit, they might like you, according to new research. The ‘catching yawn’ is caused by an irrepressible need to share and understand the emotions and feelings of others, scientists said
The ‘emotional bridge’ created by the shared experience enhances social bonding, according to Italian scientists.The researchers, who monitored 33 adults over 380 hours, found that a yawn was far more likely to spread among groups of friends.Recording 1,375 yawns, the scientists found that, the speed and likelihood that a yawn would be repeated was much higher in friends or relatives.