To abandon a prospective spouse by deciding not to get married at the last minute.
leave someone holding the baby
To abandon someone and put them in a position where they must take the…
leave someone to their fate
to abandon; to give up on; to leave on their own – chiefly in regard t…
leave someone in the lurch
To abandon somebody; especially, to abandon somebody and leave him or …
leave someone high and dry
To abandon somebody; to stop providing assistance at a crucial moment.
leave for dust
To leave or abandon someone alone without helping or caring for them.
lead someone to the altar
To get married to someone.