yes they work – they are the ones the police use. I know it seems a bit much but honestly its worth it, if you have a suspicion test them.
Oh god, honestly you sound like me.. its as though i am writing – as soon as my BF went out i went into panic mode, would call after 10 mins if he didnt answer i would have meltdown.
It really affected me mentally, my anxiety was just awful..
google addiction counselling, hopefully someone can help your OH.