Deciding when to have sex in a relationship is a personal decision and there is no one-size-fits-all answer. What is most important is that you feel comfortable and ready to take this step, and that you are with a partner who respects your boundaries and decisions.

Here are a few things to consider when deciding when to have sex in a relationship:

1. Your own values and beliefs: Think about what is important to you and what feels right for you.
2. Your level of emotional and physical comfort: Make sure that you feel emotionally and physically comfortable with your partner before having sex.
3. Communication with your partner: Talk to your partner about your feelings and boundaries, and make sure you are both on the same page.
4. Protection: Make sure to use protection to reduce the risk of sexually transmitted infections and unintended pregnancy.

Ultimately, the most important thing is that you feel confident and comfortable with your decision. It is okay to take things at your own pace and to wait until you feel ready.