get involved (in or with someone or something)
1. To establish an association, typically work related, with something or some organization. Johnny's getting involved with a non-profit health clinic during his summer vacation. I've gotten involved in campaigns for a number of political candidates over the years.
2. To become embroiled in some event, situation, or predicament. I make it a point never to get involved in other people's personal affairs.
3. To become emotionally, romantically, or sexually associated with someone. I got involved with Georgina over two years ago, and we both couldn't be happier! You should never get involved with a co-worker or colleague—it can only lead to trouble.
4. To become embroiled in the actions, plans, or developments of another person. Your stupid schemes are going to cost me everything I have; I should never have gotten involved with you!
Become associated, especially in an emotional or sexual way. For example, He joined the company last year but never really got involved in the work, or It's been two years since Tom got involved with Jean.