Answer:
1. it means that the fight they had was a small part of their problem
2. tying the knot signifies getting married
3. they couldn't keep avoiding their problem, so they have to face it eventually
4. it means to give something low priority or to put it in the back of their mind
5. it means they finally have hope and he can feel himself getting better
6. the term means to hop onto the trend or do what everyone's doing
7. it means that all they do is just talk and they don't actually act upon their words.