He's taken on the ultimate challenge of his life; marriage.

And MTV star Abram Boise proposed to girlfriend Rachel Missie, against a romantic, mountainous backdrop.

The Challenge star took to Instagram to announce the news with a sweet Instagram post.

Soon-to-be Mr. and Mrs.: MTV star Abram Boise, 36, proposed to girlfriend Rachel Missie, against a romantic, mountainous backdrop. They are seen in a seperate Instagram snap from one of their travels

'I could not be more honored that @rachelmissie has agreed to be my wife in this life,' he began.

'Joy. Sheer joy. Much love, be well. @cohuttalee @bigdaddyskro @johncofer photo cred. Thanks.'

The loved-up couple couldn't contain their excitement, which was evident in a collage of snaps shared to Abram's Instagram.

Evidence of love: The loved-up couple both share sweet images of each other to social media

Abram rose to fame on MTV's Road Rules and The Challenge, according to Us Weekly.

Prior to his relationship with Rachel, the Los Angeles native was dating co-star Cara Maria Sorbello.

The couple were together in 2010, split in 2011 and later reunited before breaking up for good in 2015.

Wanderlust: They share a love for travel and document all of their adventures on Instagram

The reason behind the final split with his ex was due to her alleged cheating on him with reality show star, Thomas Buell.

Following Thomas, she moved on to Kyle Christie and later, Paul Calafiore.

Cara and Paul split after he cheated on her with his ex-girlfriend, but reconciled publicly on Valentine's Day.