Answer:
"And to sink in it, should you burthen love—Too great oppression for a tender thing."
It means if you sink in love, then you're burdening it. You're putting too much weight on such a tender thing.
Answer:
"And to sink in it, should you burthen love-----
Too great oppression for a tender thing"
If you sink in love, then you're burdening it. You're putting too much weight on such a tender thing.