The best way to ignite a healthy jealousy in your boyfriend is to show him that you don't need him to have fun. Have a great time with your friends and if he asks you about it later tell him how much you missed hanging out with them and how you desperately need your "girl time." You want to give him the impression that you're perfectly happy and having fun without his presence.  Call your friends, head out to a club, or do something that you all enjoy together. Have a girls' night out. If you're feeling neglected by your boyfriend, spending time without him is a great way to make him miss you, but it's also a good opportunity to distract you from any hurt you may be feeling by his neglect. Don't just "use" friends to make your boyfriend jealous. No one wants to be friends with someone they feel is just using them to make others jealous. Take time to care for your friends and do actually spend a lot of time with them -- you want them to still be around if your relationship ends. If the reason you want to make your boyfriend jealous is because he's making you jealous by talking or texting with other girls, then the first thing you need to do is stay calm. If he's trying to get a rise out of you, going on a rant and getting angry is exactly what he wants you to do. Instead, be chill and act like you're above it.  It's possible that your boyfriend is flirting with other girls and doesn't even realize it, so give him the benefit of the doubt and try talking to him about it if it's really bothering you. Make sure the conversation with him is very gentle and understanding, not accusatory or heated. If you see him talking to other girls and he just want to get a rise out of you, the best way to respond is to act like nothing strange is happening. Go talk to someone else, or if he's talking to a girl right in front of you, jump into the conversation and be super friendly with her. This will probably throw him off because it shows that you don't care if he talks to other girls. Also, if this is the way your boyfriend...

===
Write a summary of the previous text in Vietnamese:
Dành thời gian giao du với bạn bè nhiều hơn. Giữ thái độ bình thản. Đừng trả lời anh ấy vội. Giao du với các bạn nam khác. Cùng những người khác làm những việc mà anh ấy yêu thích. “Lột xác” về ngoại hình.