The 26-year-old model - who has an on/off relationship with the 'Yeah 3X' hitmaker - is believed to be keen on tying the knot with the singer, even if he has to go to prison after his probation was revoked.
A source shared: ''Of course she would marry Chris. There's not one man she would rather spend the rest of her life with other than Chris.
''She loves him that much and will be there for him no matter what happens in March. Obviously, she doesn't want him going to jail.
''She wants him home and in the studio so he can continue to inspire people with his music and his dancing and share his talents with the world.''
Meanwhile, the 25-year-old singer - who reportedly broke the terms of his probation, which were handed to him in 2009, by not finishing his community service and leaving town without permission - is also keen to wed his girlfriend, despite being ''scared'' about what will happen during his upcoming court appearance.
Another source added to HollywoodLife.com: ''[He is] scared and he's contemplating marrying Karrueche now before his situation gets worse ...
''Chris is thinking ahead because he doesn't know what will happen in March. He could go to prison or he could be free.
''But what he does know is that he wants his girl to have full and complete access and power over all of his affairs and to make sure that legally happens. She'd have to be his wife and he's cool with that.''
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