Sexual intimacy could be having sex with someone, being physically close together. Emotional intimacy may be people who like each other a lot and share and feel similar emotions, but may not be involved in a physical aspect of the relationship. Emotional intimacy may often be before sexual intimacy.

Emotional maturity refers to an individual's ability to understand, manage, and express their emotions in a healthy way. On the other hand, emotional intimacy is the close emotional connection between individuals, characterized by trust, vulnerability, and mutual understanding. While emotional maturity relates to individual emotional skills, emotional intimacy involves the depth of emotional connection in relationships.

Emotional maturity refers to having the ability to understand and manage one's emotions effectively, while emotional intimacy involves being able to connect deeply and share one's feelings with others in a close and trusting relationship. Emotional maturity is about individual growth and self-awareness, whereas emotional intimacy pertains to the depth and closeness of connections with others.

For most people (and especially young people), I don't think emotional intimacy can completely replace physical intimacy. To attempt to do so invites frustration and conflict. On the other hand, emotional intimacy (provided it is mutual) BEFORE physical intimacy makes the physical acts much richer and more fulfilling because the physical acts tend to be more focused on giving pleasure to your partner than on taking pleasure for yourself.

This would probably be called fear of emotional intimacy with another person.