We hide behind sarcasm. We roll our eyes at sappy remarks instead of admitting to the butterflies flapping around our stomaches. We make lighthearted jokes that verge on teasing instead of doling out compliments on the tips of our tongues. We pull ourselves away whenever our feelings grow too intense. We take precautions to prevent ourselves from getting too attached. We raise our guards. We padlock our chests. We are careful about who we let into our lives because we…