### Clue: Now and then, during poetic evening, gets extremely mushy about love (5,2,5)
### Answer: EVERY SO OFTEN 
 ### Explanation: Definition: Now and then
 E'EN(poetically, a contraction of "evening", that part of the day) **containing**(during … gets) [VERY(extremely/to a high degree) + SOFT(mushy/squashed, as with "mushy peas") **containing**(about) O(letter representing 0/"love" in tennis scores)].