A couple possible solutions:
1. Use rules or code to copy the value of field in position 1 to field in newly inserted row.
2. Extract the field outside the repeating section, and just reference the non-repeating field inside.

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Greg Collins [InfoPath MVP]
Please visit: http://www.InfoPathDev.com
I have a form with several repeating sections that need non-repeating text
somewhere in the middle of the section. The only thing I've come up with to
keep the text from repeating with the rest of the controls is putting the
text into expression boxes with conditional formatting to hide them if
another field in the section = position() > 1. This works, but doesn't seem
like the best solution, especially since I have multiple lines of text and
could end up having to do this several times. Any ideas?