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Only if you're comfortable with it.
Please, only as far as it's reasonable for you.
I hope this isn't too personal, but...
If anything bothers you, please don't hesitate to say so.
I'm sorry for the trouble, but thank you in advance.
I apologize for the abrupt request.
To put it without ruffling any feathers...
Let me just add one thing to be safe.
Just so you know, I'll mention this.
I know you must be busy, but...
I'm sorry, this is on my end, but...
At the risk of overstepping...