Most theatres only put showtimes up through the next Wednesday or Thursday since new movies come out the next weekend, so that's why you don't see it online yet. But I'm certain they will have Fifty Shades shows this Friday 2/16/18 and after that, since it just released last weekend. I'd bet the showtimes will be up tomorrow night at least.
Nope it looks like the last showing is Valentine's day.
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