From The HSX Dude (News Section):
10/5/14 [link]
NBC has ordered 5 additional episodes of Marry Me (18 episodes)
12/12/14:
V: NBC Sets Midseason Schedule, 'Marry Me', 'About A Boy' Benched (link)
"NBC is putting comedies “Marry Me” and “About a Boy” on hold to launch the second season of “Undateable” and new comedy “One Big Happy” in the plum, post-“Voice” spot."
"Both “Marry Me” and “About a Boy” will return later in the season."
Futon Critic (Tuesday Nights NBC):
Undateable (link) 3/17/15 3/24/15 3/31/15 4/14/15 4/21/15 4/28/15 5/5/15 5/12/15 5/12/15
The Voice 2 Hour Finale 5/19/15
America's Got Talent (link) 5/26/15 6/2/15
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Marry Me has aired 14 episodes and has 4 in the can. (Schedule has been update since Monday and corrected the listings).
It is not returning to its Tuesday night timeslot this season.
It still can be burned off on Thursday nights which is hurting or on typical Saturday nights burn slot.