my DH is always on his, but on the internet, he takes it to the bathroom, to bed as his alarm is his phone, BUT he is open with it if i want to use it hell hand me it as normal, like when he had his n900 i would use it for mumnetting internet if my BB was slow.
A normal none affair bloke would give you his phone to use and not be confidential about it.
Deff something going on. if you heart is telling you something and something isnt right then thats telling you something.
As a partner/wife etc you just know these things.