Camping means cuddling. Let's be real, it's chilly at night the only source of warmth is the smoky campfire and the people sitting next to you. If you're an avid cuddler, and let's face it, who isn't..... then I would definitely recommend a two person bag!
It may be that you don't just need this for camping.... there's no more fighting over blankets. How many times have you woken up to no covers? It sucks! Two person sleeping bags totally solve this problem.