There is no absolute right or wrong to say hello to a beautiful woman in Tik Tok. It depends on the way you and your boyfriend use Tik Tok, and the communication and trust between you.

If you feel uneasy or uncomfortable about your boyfriend greeting other beautiful women in Tik Tok, you can honestly communicate your feelings with him. Tell him your worries and how you want him to change his behavior.

At the same time, pay attention to your boyfriend's starting point and motivation. If his motivation is friendliness and politeness, then this behavior may be understandable. However, if he intends to establish more contact with these beautiful women, then you may need to reconsider your relationship.

The most important thing is that you and your boyfriend should establish good communication and trust and understand each other's thoughts and feelings. Only on the basis of mutual understanding and trust can you maintain your relationship.