Once you have taken time to consider your feelings and evaluate your influences, you may still be considering having sex. If you decide that you are ready and do not feel that your partner or friends are pressuring you, talk to your partner about how you feel.  Try saying something like, “I think I might be ready to start having sex. How do you feel about that?” Keep in mind that even if you feel ready, your partner might not feel the same way. If your partner says he/she is not ready, be respectful of his/her choice. If your partner is ready to start having sex too, you should find out about your partner’s sexual history. To protect yourself, it is important to know how many sexual partners your partner has had as well as whether or not your partner has ever had a sexually transmitted infection or STI. Try saying something like, “I understand if you are a bit uncomfortable discussing this with me, but I would like to know more about your sexual history. Have you ever had sex before? If so, how many people? Have you ever had an STI?” Before you enter into a sexual relationship with someone, it is important to think about how you would handle serious consequences such as pregnancy or infection. Do you both have health care providers or a clinic that you could go to for treatment? Are you both willing to accept the risk of pregnancy or infection as part of a sexual relationship? Carefully consider the potential consequences of sex and how you would deal with them. After you have considered the potential negative outcomes of sex, take time to discuss your desires and expectations for sex as well. Talk about what you want the experience to be like, the first time and beyond. Ask your partner to share his/her expectations as well. For example, do you have certain positions or other things that you want to try while having sex? Do you want to snuggle in bed for a while after sex? Do you want a monogamous relationship with your partner? Before you have sex, you should also figure what you are going to do to protect...

TL;DR in Indonesian:
Bicarakan dengan pasangan Anda. Tanyakan mengenai riwayat seksual pasangan. Bahas tentang cara Anda berdua menangani konsekuensi serius. Sampaikan keinginan dan harapan Anda. Buat rencana untuk melindungi diri sendiri. Pertimbangan untuk berbicara dengan seseorang yang peduli pada Anda.