Well, because that is when the real you emerges, creating feelings of trust, love, respect, and commitment. (psychcentral.com)
This is the hormone that is known to promote feelings of trust and empathy, as well as mother - infant bonding. (effectivecoverage.com)
According to Healthy Children, as your baby looks up into your eyes, it helps develop feelings of trust and security and he gets used to life outside the womb. (romper.com)