I used to watch this movie as a child so all details are blurred. One scene I have clear in my mind is:
couple is in bed, woman writes on a balloon a promise to always look after (or be there? or take care?) the man (boyfriend or hurband, not sure).
Couple breaks up, man takes wife to court after a settlement or alimony and bring as proof the old deflated balloon saying she'd always take care of him.
sorry I was very very young cant recognise actors or anything else