How do girls deal with boys who are not sure about their relationship and invite them to travel together?

If you are not sure about this boy, then you should carefully consider whether to accept his invitation. Here are some suggestions:

1. Know each other's intentions: It is very important to know each other's intentions before deciding whether to accept the invitation. What is the purpose of inviting you to travel? Does he want to further develop his relationship, or is he just looking for someone to accompany him on a trip?

2. Determine your feelings: It is also important to know your feelings before deciding whether to accept the invitation. Do you have a crush on this boy? Would you like to travel with him?

3. Consider the mode of travel: If you want to travel together, you should consider the mode of travel. Do you live together? Do you need to bear the travel expenses? These details should be considered clearly.

4. Decide whether to accept or not: Finally, whether to accept the invitation depends on your feelings and wishes. If you feel ready to accept the invitation, then you can consider accepting it. However, if you feel that your's feelings are not mature enough, or you can't accept the invitation for other reasons, then you should tell him frankly what you think.

In short, deciding whether to accept the invitation requires careful consideration of your feelings and the other party's intentions. The most important thing is to express your ideas clearly and avoid unnecessary misunderstandings and troubles.