Bizzare New Friendship

My friend Katherine and I have started a friendship through college and know each other about two years now. Over the Last couple of months we've grown particularly close after she came to visit and stay with me when I lived in America during the summer. We got on so well I invited her to my home town in Ireland to meet my family, friends and show her around. She stayed the night and we had a great time and just as she was leaving the next day, she was walking out the front door but had to return inside because a long brown hair was caught in her left eye. Her eye was watering and turning red and she couldn't get the hair out. We thought nothing of it. A few weeks later she took me to her home town to meet her family and friends. After my visit,Just as I exited her house, my eye started to itch, water and sore and I discovered I had a long brown hair caught in my left eye which I couldn't remove for a while. We stated the coincidence, but the timing and silmutaneous nature of the incident, that we both happened to be leaving from our first ever visit in each others homes/family meeting was strange.