When you follow someone on Twitter for a lengthy period of time, you notice things. DVO reminds me of David Haye, in that from her tweets, you'd never guess she is married. Holidays, parties etc etc. I predict they'll announce a split before the year is out. Hope I'm wrong, though.
You can't judge a couple's relationship by how much they mention and/or communicate with each other on twitter! Not everyone feels the need to share their every wind-breakage, row, snog and shag on twitter!
Unfortunately, there seems to be this idea that a couple are only in love with each other and happy together if they broadcast it on the internet. If they don't, then they must be unhappy/on the verge of splitting up!