Attractive, getting involved (8)
I believe the answer is:
engaging
This clue could be a double definition.
'attractive' is the first definition.
(similar in meaning)
'getting involved' is the second definition.
The answer and definition can be both to do with social activities as well as being present participle verbs.
Perhaps you can see an association between them that I don't see?
Can you help me to learn more?
(Other definitions for engaging that I've seen before include "Delightful; promising" , "Attractive or charming - getting married?" , "Winsome" , "embarking on military action" , "Beginning military action" .)