Yeah, that's the reason…
A source reveals:
"They're totally in love and really want a baby, but Danielle can't stand Kevin's snoring, so she's started sleeping in the guest room…it's become this huge problem between them."
Danielle has asked Kevin to consider using a special sleep mask, but he says it would be uncomfortable to wear and he thinks if Danielle had to sleep "next to a guy wearing an anti-snoring device, it would certainly not get her in the mood for love."
For now she's sporting ear plugs and sneaking out after he's already fallen asleep!
[Image via WENN.]