Need advice please....

Harriet
Ok....my husband has been on Facebook a long time. When we got married 5 years ago he changed his status to married to me. I bounced on his page tonight to see a pic I posted to him and noticed he has changed all his privacy settings so no one can see anything other people post to his wall and removed the fact that he is married. On top of that he is very possessive of his phone and never let's it be off his side.....I picked it up to hand it to him the other day and he came quickly across the room to get it from me. I don't know 80 percent of the people on his friends list and he says they were all people he knew in highschool. Am I being totally paranoid or does it seem like something is up? Fyi....we have been together for 13 years now.