Conversation so far:
Who did Art Bell marry?
Art Bell was married four times, most recently to Airyn Ruiz.
Did Art Bell have any children in his new marriage?
Art Bell had two children with Airyn Ruiz: Asia Rayne Bell and Alexander William Bell.
What happened to Art Bell and Airyn Ruiz's child?
Did Art Bell talk about Asia on air?
What did Art Bell say about his new marriage?

Question: When did they get engaged?
Self-contained rewrite: When did Art Bell and Airyn Ruiz get engaged?