Husband won't tell his fantasies...

So being married for a year and having sex only about 2 X a month , I was talking to my husband's best friends wife ( who I became good friends with) . She's said yea it's not normal. Also said a few years ago before we were even dating he drunkenly told her about his bondage fantasies...? He has hand cuffs we have used before so I know he likes it. When we first started dating , he first told me and I was taken back by it because it was a little ackward by then I was fine with it.  I have talked to him a few times and he said he will work on having sex more. I have been now discouraged and don't initiate. He initiates but it's always same position and we get up and move on with our day. Why won't he tell me about his fantasies ? I'm his wife now and we are still young. I am 30 and his is 37