Answer:

agegap

Answer	Crossword Clue
AGEGAP	Dating stumbling block, perhaps
AGEGAP	Difference between generations
AGEGAP	Issue in May-December romances

AGEGAP	Marital challenge, perhaps
AGEGAP	Span that can't be shrunk
AGEGAP	It might pose a marital challenge
AGEGAP	Subject kindled by a cougar
AGEGAP	May-December wedding issue
AGEGAP	Generation-to-generation span
AGEGAP	Daters' concern, perhaps
AGEGAP	Hurdle for some couples

AGEGAP	It's big in a May-December relationship
AGEGAP	Feature of a May-December romance
AGEGAP	Relationship disparity, perhaps
AGEGAP	Possible barrier to romance
AGEGAP	It's wide in a May-December romance
AGEGAP	Feature of a May-December marriage
AGEGAP	May-December romance characteristic
AGEGAP	Space in a relationship?

AGEGAP	Difference between Gen-Xers and baby boomers
AGEGAP	Romantic impediment, perhaps
AGEGAP	Generational divide
AGEGAP	Sort of spousal separation
AGEGAP	Space in a relationship