"You are the light in my life. I am always here for you."你是我生活中的光芒。
我会一直在这里支持你。
这句话表达了对男朋友的关心和支持，让他感受到你的温暖和安慰。
在困难或者低落的时候，给予男朋友鼓励和安慰是非常重要的。
可以通过表达自己的爱和关心，让他感受到你的支持和理解。
同时，也可以提醒他自己的优点和过去的成就，让他重新找回自信和勇气。

I'm sorry to hear that your boyfriend is feeling down. Here are some comforting sentences you can say to him in English:

1. "I'm here for you, no matter what. You're not alone in this."

2. "You are strong and capable of overcoming any challenge that comes your way."

3. "Remember that I love you and believe in you. We'll get through this together."

4. "Your happiness is important to me. Let's find ways to make you feel better."

5. "I admire your resilience and the way you handle difficult situations."

6. "You are an amazing person, and I'm grateful to have you in my life."

7. "Don't be too hard on yourself. We all have bad days, but tomorrow is a new opportunity."

8. "Take your time to heal and process your emotions. I'll be here to support you."

9. "You have a bright future ahead, and this setback is just a temporary obstacle."

10. "I believe in your strength and ability to bounce back. You've got this!"

Remember, the most important thing is to be there for him and offer your support and understanding.