Machine Gun Kelly和Blackbear合作，于2020年8月7日发布了一首单曲《My Exs Best Friend》，歌名就透着纠葛。而曲风依然是MGK转型之后偏摇滚的风格，还是挺好听的。并且在美国Billboard Hot 100排行中获得了第28名。
Machine Gun Kelly是一个毫无争议的狂野男孩，他具有磁性的魅力，他总是愿意尝试新的音乐、新的风格，并每次都能取得突破。他出色阿卡贝拉风格说唱如机枪一般，他将自己的整个灵魂都注入了作品中。
My Ex's Best Friend歌词：
Machine Gun Kelly/blackbear：
Ayy
You know my ex so that makes it all feel complicated yeah
It all seems complicated
I read those texts that you sent to yours
But I'll never say it yeah
I'll never say
Machine Gun Kelly：
You walked in my life at 2 AM
'Cause my boys knew girl that's your best friend
Act like you don't see me won't play pretend
Your eyes already told me what you never said
Now we're in the backseat of the black car goin' home
When she ask me "Is it wrong if I come up with you"
We're both drunk on the elevator
When I kissed you for the first time in New York City uh
Machine Gun Kelly：
I swear to God I never fall in love
Then you showed up and I can't get enough of it
I swear to God I never fall in love
I never fall in love but I can't get enough of it
Blackbear：
First off I'm not sorry I won't apologize to nobody
You play like I'm invisible girl don't act like you ain't saw me
Last year was a mess and how I acted was beyond me
But the past still revolves me you text me I ain't responding
But now s**t's done changed go our separate ways
But look at this damage you did to me
I still want nothing to do between you and me
Please don't say nothin' at all sound so true to me
We don't got nothin' to say hey
Machine Gun Kelly：
I swear to God I never fall in love
Then you showed up and I can't get enough of it
I swear to God I never fall in love
I never fall in love but I can't get enough of it
I swear to God I never fall in love
Then you showed up and I can't get enough of it
I swear to God I never fall in love
I never fall in love but I can't get enough of it
Machine Gun Kelly/blackbear：
You know my ex so that makes it all feel complicated yeah
It all seems complicated
I read those texts that you sent to yours
But I'll never say it yeah
I'll never say
Carol Of The Bells（钟声颂歌）钢琴谱-Mykola Leontovych
Find My Way钢琴简谱-数字双手-DaBaby
Myron钢琴简谱-数字双手-Lil Uzi Vert
When Will My Life Begin钢琴简谱-数字双手-Mandy Moore
Photo of My Mind钢琴简谱-数字双手-宋佳人
Give You My Heart钢琴简谱-数字双手-IU
Not My Responsibility钢琴简谱-数字双手-Billie Eilish
My My钢琴简谱-数字双手-Seventeen
妖怪の山简谱-Mysteryious Mountain
Break My Heart Again钢琴简谱-数字双手-Finneas
Empty Town钢琴简谱-Toby Fox 托比·福克斯演唱
Tu Scendi Dalle Stelle钢琴简谱-Alphonsus Liguori演唱
Way Back Then钢琴简谱-郑在日 Jung Jae-il演唱
Apologize钢琴简谱-OneRepublic演唱
引子与山歌钢琴简谱-陈铭志演唱
Sasayagi钢琴简谱-西村由纪江演唱
诀别书钢琴简谱-邓垚演唱
Waltz No 1 Op 6 Collapse钢琴简谱-Hikaru Shirosu 白素光演唱
爱情多瑙河钢琴简谱-熊天平演唱
Wedding March钢琴简谱-门德尔松 Felix Mendelssohn演唱
Aint Misbehavin钢琴简谱-Fats Waller演唱
Il Mondo钢琴简谱-Jimmy Fontana演唱
慢慢钢琴简谱-颜人中演唱
Melody Original mix钢琴简谱-Ash演唱
Mesdames钢琴简谱-Grand Corps Malade演唱