1. sometimes she loved him too
2. endless
3. depressing
4. he's had some distance
5. long
When could is used it refers to an ability that <span>a person generally had in the past or to something that was generally possible in the past, can is present.
I could wash the dishes for you. (having the ability to do it)
I can wash the dishes for you. (its actually going to be done)
hope this helps you! :-)</span>
I'd say beautiful is too general and should be replaced.