Does he want a separation or what?

last week my husband told me that he would like a trial separation because he was not sure if he was still in love with me or not. he said he needed space and then when i commented on one of his pictures on facebook, saying that i was a lucky gal, he got mad and said that i couldn't even give him separation online. i deleted the comment then he said i didn't have to. then about an hour later he asked me if i wanted to go to a reunion for his old high school tomorrow. i can't figure him out. what do you think is going on with him?