2015 was a crazy year for heartaches and break ups. We get emotional when we hear news that our favorite celebrities are falling in love � but it gets us even more emotional when we see them parting ways. As the year comes to an end, lets take a look at some of the most heart-crushing celebrity breakups of 2015.

Ex-Couple: EXO Baekhyun & Girls' Generation Taeyeon

Cause of breakup: Busy schedules. 

Length of relationship: On and off for a little over a year.

Ex-Couple: Crucial Star & Heize

Cause of breakup: Busy schedules. 

Length of relationship: Unknown. However, it was reported that they had broken up before Heize began filming for Unpretty Rapstar 2.

Ex-Couple: Lee Seung Gi & Girls' Generation YoonA

Cause of breakup: Busy schedules.

Length of relationship: 1 year and 9 months.

Ex-Couple: Lee Hee Joon & Kim Ok Bin

Cause of breakup: Natural reasons.

Length of relationship: 6 months.

Ex-Couple: SG Wannabe's Kim Yong Joon & Hwang Jung Eum

Cause of breakup: Busy schedules caused them to drift apart.

Length of relationship: 9 years.

Ex-Couple: Oh Seung Hwan & Girls' Generation Yuri

Cause of breakup: Long distance was too much for them to handle.

Length of relationship: 6 months.

Ex-Couple: Kim Sun Hyung & She'z Jinah

Cause of breakup: Clashed because of differences in personalities.

Length of relationship: Over 2 years.

Ex-Couple: Jung Eun Woo & Park Han Byul

Cause of breakup: Busy schedules.

Length of relationship: 7 months.

Ex-Couple: 2PM Nichkhun & Girls' Generation Tiffany

Cause of breakup: Busy schedules.

Length of relationship: 1 year and 5 months.

Ex-Couple: Jim Sturgess & Bae Doo Na

Cause of breakup: Unknown.

Length of relationship: Over a year.

Ex-Couple: G-Dragon & Mizuhara Kiko

Cause of breakup: Work and busy schedules. 

Length of relationship: On and off for over 4 years.

A huge portion of the breakups are work related � and we understand. Fortunately, many of the ex-couples have stated that they will continue to remain good friends even after the breakups. With that said, which breakup of 2015 was the most heart-crushing to you? Share with us your thoughts and ideas below!