What's the best thing to do during a break, and what exactly is a break?

I'm a boy and I have a friend (female) at work. Over time we came to like each other more than friends. Both, I like her and she likes me very much. Actually, I think it would be better to say that we fell in love with each other. We ended up being very close, talking every day, going out together, etc. We like to hang out with each other for hours, in short we have an extremely strong connection between us. The problem is that we started to suffer a lot because of each other. I mean, she suffered a lot because I sometimes didn't respond to her messages in a timely manner or because I didn't write to her on some days. I too have suffered from her a few times. She tells me that this is not normal and that it is not healthy, at least not at the stage we are in now (because we are not together at the moment). And it seems to her that we have come to be responsible for how the other of us feels (that is, if she feels bad because I did something wrong about her, I feel guilty and vice versa), and now going through a more difficult time at work, she no longer wants to have this responsibility and feel this guilt. Thus, we made the decision to take a break, to distance ourselves a little for a month. And we decided that during this month we will behave normally at work, we will talk to each other, but we will no longer do things just the two of us. The questions would be:
1. What should I do this month and what do you think is better to do? To be colder with her in order to make her miss me or to act normal at work (as I would with any other colleague)?
2. What do you think about the whole situation? Do you think there is a chance of us ever being together?

What's the best thing to do during a break, and what exactly is a break?
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