I don't believe that. That doesn't make sense. It looks to me the bride describing the Messiah. Besides, even if it is about Solomon, it's further proof that the family of Adam was ruddy complected up through at least Solomon.
Reading the whole think is almost pornographic at times, especially versions like the Revised Standard which substitutes 'lover' for 'beloved'.
What you call "pornographic" others would call a healthy appreciation for the opposite sex. We as humans transfer our spiritual love and appreciation of a member of the opposite sex into sexual expression to show it to that someone. God uses our understanding of this to relate how he feels about his people (those who believe in him and revere him).
Taken as a whole, since Song of Solomon 5:4 says "My beloved put in his hand by the hole of the door, and my bowels were moved for him", one would think that Solomon or Jesus or whomever was also a laxitive.
You're goofy. Take that back to the original language and it's clear that it's speaking of the feelings you get in your stomach when you're really excited about something-like butterflies in the stomach.