Worthwhile partners will care about your feelings. They will support your need to take your time. They will be proud to protect you from sexually transmitted infections and unintended pregnancy. It is wrong for a partner to pressure you, ask you to take risks, or ignore your feelings. It is not a good sign if your partner keeps secrets.
Communication is very important.
People often think very differently about sex and what it means. For example, many people expect that having sexual intercourse will increase their intimacy. In fact, having sex does not guarantee intimacy. It can even be a barrier to intimacy. Or sometimes, one partner is having sex just to have sex while the other is hoping for a lifetime relationship.