A Las Vegas-based dating website for the post-"Fifty Shades of Grey" era has gained steam, now with 2 million members, 44 percent of whom are female college students seeking a "sugar daddy."

As "sugar babies," students receive an average of $3,000 per month for relationships, mostly with older men who get companionship -- and sometimes much more.

UCLA was among the fastest-growing "sugar baby schools," with 180 Bruins looking for a wealthy partner in a "mutually beneficial" relationship, according to a report this week from the website, SeekingArrangement.com.

The University of California, Los Angeles, ranks No. 20 on SeekingArrangement.com's list, while Cal State Fullerton, USC and UC Riverside are in the top 75, according to a ranking provided by the website.

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See the complete list of Southern California campuses with 'sugar babies'