When a client says or writes something like this, it usually means that I delivered something much earlier than expected, I introduced a shocking discount, I accepted to work on the revision #7, or something more or less similar, which strongly benefits to my client.
I respect professional lines both visible and invisible ones. I know a little bit of German, btw. So, when I talk to my German clients, you can feel this difference between the formal and informal tone of conversation and addressing. This isn't the case in the English language. Not to mention the use of first names in business correspondence and communication.
You work. You get paid. You move on. You enjoy more or less working with some of the clients. You end up with good or bad memories. Yet, I'm telling you, more than once, for some of the guys I worked with, I thought: in some other universe, under some other circumstances, we could be good friends. I mean it.
So, have you ever crossed the line? I did and regretted it. When the money knocks at the door, friendship jumps out of the window. I got carried away and ended up being heavily exploited. Do you have to be like a machine all the time? I would like to hear and compare some of other warrior's experiences about this one. Thx.