Please someone help check my sentences if they are ok?

And one more question.

5. How uneasy it is to you living with me is nothing more or less than it is to me to live with you?

My offhand opinion/questions/comments:

1.Do you know how hard/difficult this job is to me? For me, not "to me.: What's implied is that the job is hard for me (to perform)

2.I knew exactly how serious that problem was to you? This would depend on the context and what you really intend to say. Here again, I suspect you mean "for you" not "to you" It might "seem" to you, but, otherwise it is a problem you have to deal with--it is a problem for you (to solve).

.I can imagine how sad/painful/happy it had been to you? Just doesn't sound right to me. usually it's "made" happy (so, in this case "it made you") "Sad" is a mood--here again, things "make you sad" "painful is a state of discomfort, so "painful for you (not really "to you" although I guess you could get by with this). It's not uncommon to say that something is painful "to me" (or "to you"), but not in that sentence.

4.I can sense how much love/hateful she had been to him during that time? hateful would be OK. But not "love." loving, maybe. But in either case, leave out the word "much."

5. How uneasy it is to you living with me is nothing more or less than it is to me to live with you? Just say something like: Living with you makes me just as uncomfortable as it make you by living with me. Instead of "uneasy" (not easy) you should just say "hard," in any event.

You might say "it's not easy to live with you." But you wouldn't normally say "it is "uneasy" to live with you. In that case, just say "hard" (or difficult).

Thank you very much.

You're welcome. I'm happy if that helped.

Hi Imsak,
1. Do you know how hard/difficult this job is for me?
2. I knew exactly how serious that problem was for you?
3. I can imagine how painful/happy it had been to you?
4. I can sense how love/hateful she had been to him during that time?

Thank you for adding more.

This person proofreadmyfile and others are not advising you correctly.

This 4th sentence should have read:
4. I can sense how loving/hateful she had been to him during that time.

Furthermore, in your sentences 2, 3 and 4 they should end in a period - not a question mark.

Thank you very much.

For the question mark in the sentences 2, 3 and 4, I maybe inadvertently put it like that, and really has escaped my notice.

Biggest problem in three of your sentences is using 'to' when you should be using 'for'.Three of the sentences end in a question mark when they should end in periods.

Better:

1.Do you know how difficult this job is for me?
2.I knew exactly how serious that problem was for you.
3.I can imagine how painful it had been for you.
4.I can sense how hateful she had been to him during that time.

Thank you. I appreciate your help.

As you pointed out, I often feel confused about when to use TO and when to use For in sentences. It seems I have to learn more how to use them.