Crushology 101 (Korean: 바니와 오빠들) is a 2025 South Korean television series starring Roh Jeong-eui, Lee Chae-min, Kim Hyun-jin, Kim Min-chul, Hong Min-gi and Jo Joon-young. The series depicts the love story of the female protagonist Bunny, who is surrounded by four attractive boys after breaking up with her dark first love. It premiered on MBC TV on April 11, 2025, and airs every Friday and Saturday at 21:50 (KST). It is also available for streaming on Kocowa and Viu in selected regions.

Its eighth episode on May 3, 2025 drew a rating of 0.7%, the lowest ever recorded for a drama airing in the prime time slot on a terrestrial television network. This record is shared with the February 20, 2025 episode of Kick Kick Kick Kick (which thereafter was moved to a late-night time slot and received lower ratings). Its peak single-episode rating of 1.5% and its overall average ratings of 1.0% are also the lowest ever recorded for a drama airing entirely in the prime time slot on a terrestrial television network.