What is she only wants to hang out in groups?

There could be various reasons why someone may prefer hanging out in groups instead of one-on-one meetings. Some possible explanations could be:

1. They feel more comfortable and secure in a social setting that involves multiple people instead of just one.

2. They may have had negative experiences in the past while meeting someone alone, which could have resulted in them feeling nervous or uncomfortable.

3. They may feel that group settings offer more options for activities and conversation than one-on-one meetings, which may feel limiting.

4. They may simply enjoy being around other people and thrive in a group setting.

Ultimately, it is up to the individual to determine what kind of social interactions they prefer. If someone you know only wants to hang out in groups, it is important to respect their wishes and find ways to accommodate their preferences.