I am 45 years old and have a crush on my 50-year-old brother. Why don't you send him a message and give it back to me? What's a good pickup line for Doby? Help me?

First of all, age is not the only criterion for feelings, but if you really like this big brother, you can consider the following points to try to strike up a conversation:

1. Express your interest sincerely: Tell him directly that you like him and want to know him better. Try sending text messages or emails to express your interests and expectations.

2. Find the same topic: You can try to understand his hobbies or work fields and start a dialogue with the same topic. Try to ask some open-ended questions to give him a chance to share his views and experiences.

3. Pay attention to courtesy and respect: When chatting up people, you must pay attention to courtesy and respect. Don't be too direct, don't offend the other person too much, and respect his wishes and choices.

4. Don't be too active: Although you have a good impression on him, be careful not to be too active or too reluctant. If he is not interested in you, respect his choice and don't pester or bother him too much.

In short, it takes care and patience to strike up a conversation, and it needs to respect each other's wishes and choices. If he doesn't respond to you, don't be too depressed. Maybe he has his own reasons and ideas. The most important thing is to maintain self-confidence and a positive attitude, live a good life and enjoy the beauty in life.