I do so agree with Ginny, my entire family used to live life by the 'Lets keep quiet, bury our heads, problems disappear!' mentality, and all wondered why they either had affairs, got divorced, argued constantly, and made life hell. No-one would ever confront problems. I was very different. Probably TOO different, because the second I had a problem, I liked to go over it, talk about it until it was sorted, and my family could not deal with this at all.
However, I don't live with lies, mind games, being walked upon, I would gently sit him down and talk. He might not like it, but tough.
You are married, of course you don't need to know his every whereabouts as someone else posted, however, being lied to about where he's going is completely different.
Sending loads of love, hoping its all innocuous and innocent for you. x