How do I tell him I love him?

Just come out and say it. Don't ask him if he loves you. Just tell him you love him. And if you're talking to him over the phone you could tell him "Love you, Bye". If he freaks out then just tell him you're sorry. And if he likes you as much as you love him, it will all turn out for the best.

Well 11 months I'd say is a pretty solid relationship. The fact that he has been with you almost a year should tell something. I think he feels the same way you do. Express yourself. (If he doesn't feel the same way, why did he gut out 11 months with you? Don't ever be sorry if he doesn't feel the same for you.) Good luck!