men naturally enjoy variety in their life, at extremes, this is where infideilty comes into play, but in normal doses its normal, healthy behavior. by "design", humans aren't meant to be monogamous, otherwise we wouldn't be attarcted to other people once we've found a partner. this DOES NOT AT ALL mean he's not attracted to you especially if it never goes beyond fantasy. it may mean he's not satisfied, but it very well may not. the best you can do is make sure YOU are doing all you can to satisfy him (and he should be doing the same for you) and then you'll have less to worry about. talk to him as well, ask him if he's satisfied with every aspect of the relationship. never hurts to ask, and understanding is the key to a progressive relationship. especially being the one year mark, the initial lust you guys felt of "ooh, who's this new guy in my life" is becoming routine, you see each other often if not everyday, so naturally there's a decline in level of excitement, but that doesn't mean it's not there. this period is often pivotal in relationships and will probably give you a better understanding of the dynamic of long term relationships.