The idea that they could bond over their abilities sounds fun! He's not that familiar with anything to do with magic, so it will be interesting for him. Also, your Luna was taken from the canon point where she was captured by the Death Eaters? (I think) - if that is the case, they can also bond over shared empathy for painful experiences. :)

This goes for Thea too! Once he's comfortable enough with someone, supportive hugs will be a given! I'll have to keep an eye out for open logs so I can tag'em!