Recs and a meme

( Best of July: recs and opinions )

And the best of all, ersatzemma arrived yesterday for a visit! *waves*

And now for a meme!
Give me a pairing (canon or fanon) and I will tell you at least two of:
1. What they most commonly do during sex
2. Who has prettier hair
3. What they argue about most often
4. Who'd cope best if the other one died
5. The happiest plausible happily-ever-after I can think of for them.