All of these answers share a common bond. Can you deduce what it might be?
-5. wedding give away
-8. Blue Jays habitat?
-9. Schwarzenegger witness protect movie title
-10. optical instrument using mirrors to offset the line of sight
-11. Notre Dame for example
-12. to fix deeply or indelibly, as in the mind
-13. it can be sweetheart, square or plunging
Did you ever stop to think...and then forget to start again!