There are headers added by the translators to describe who is talking.
After Chapter 1 vs 3 There are four headers in a row
"The Daughters of JerusalemThe ShulamiteThe Daughters of JerusalemThe Shulamite"
The headers actually start after the first line of vs4 and then alternate and are distributed through vs 4.
I can see why they all ended up in front of vs 4......but still!