Madly in love, as if in a somersault? (4-4-5)
I believe the answer is:
head-over-heels
This clue could be a double definition.
'madly in love' is the first definition.
(I've seen this before)
'a somersault?' is the second definition.
(I've seen this before)
'as if in' acts as a link.
I am not very happy about this link. Some or all of it may belong to one of the definitions.
Can you help me to learn more?
(Other definitions for head-over-heels that I've seen before include "Completely -- turning as in a somersault" , "Completely (in love)" , "One may be thus in love" , "In great confusion (because of love?)" , "(In relation to love) madly" .)