I agree with you that when someone opens up and allows themselves to be vulnerable, it creates a deeper connection with the other person. The quote you referenced, "They've peeled away some emotional armor," really captures the essence of trust building. Trust, as you mentioned, is crucial in love because without it, people can't fully connect or show their true selves.
I also think that vulnerability helps create a sense of security in a relationship — when you allow someone to see your true self, it can make them feel more comfortable doing the same. This exchange of openness creates a safe space where love can grow and thrive.