2)
一夜を共にする/過ごす means "to be intimate with each other" there.
3)
次第 means something like "reason how it happened" in that context, so it's close to はい、なので坊ちゃんのお傍にいるんです "Yes, that's why I stay with you."
5)
It's more likely 自分で言うことではないけど. He doesn't want that others avoid communicating with him, so he said "this shouldn't be something I bring up, but,,,".
Thank you again for these details. I definitely couldn't hope to understand these with just dictionaries. Time to take note again
For today I have the following questions:
(http://imgur.com/VQ1xywt)
(http://imgur.com/zhxhyh6)
1. Does から in 流行ってから mean "because" and not "after"?
2. Does その数 mean the number of witches and not their magic items?
3. Is コツコツ the sound of knocking on the 釜? Or is it for something else?
4. Does 別にいいけど mean "sure, I don't mind" in this context?
(http://imgur.com/thoC66J)
5. Does the last line mean "I pushed everything on him and pretended that nothing ever happened"?
(http://imgur.com/f40CodO)
6. Does ちゃんとした格好 mean a carefully dressed attire? And did the girl mean that she was late because she spent time deciding what to wear?
(http://imgur.com/eRodUgK)
7. Is まいと=ないようと? I'm guessing that the boy means that the girl was saying that his food tastes good in order not to hurt his feeling, but I'm not quite sure.
8. まず人の前に出すものとして考えて作られていない
Does this like mean something along the line of "you didn't consider the fact that you are making food to serve other people"?
9. Does 常識とかにうるさい mean "to be fussy about common sense and stuff"?
(http://imgur.com/U3gVp3H)
10. In this case, does 自由 means "carefree"?
11. Does 料理にはなんの期待もしてなかった means he didn't expect that the old man would compliment his cooking at all?
12. Does ひととおり弾ける "to be able to to perform at basic level"?
(http://imgur.com/ViSoiHr)
13. Does 日ごろの感謝を伝えたかった means he wanted to thank them for what they do everyday?