I have tried to be patient, not force my son to do something simply because I want to do an activity with him. When he was younger it was easy. Nate likes sports, so he sought me out to play catch with him, kick a soccer ball around, shoot hoops in the drive way, knock a tennis ball around. When he picked up golf, I became the guy who helped support his addiction and most often his golfing partner. Some of the activities he still does, some (baseball, for instance) have lost interest with him. He is blessed with some ability, better than average hand to eye coordination, and a strong body.
Nate has never really wanted to ride a bicycle with me. He has been out on a road bike with me once, struggled when he expected to leave me in the dust. I have had him on dirt trails, on a mountain bike, a few times. He liked it but was scared.
Lately he has been looking up mountain bike videos on the internet. Nate has been asking about riding. He just called. He wants to ride tonight.
Dang.
shenrydafrankmann 
That is amazingly wonderful! I hope it goes well and continues to be something you two do together.
We had a great ride together last night. Nate was asking when we can go next, before we were out of the parking lot. I stopped before we entered each new trail head to ask if he wanted to ride the difficult trail or take a break on the easy trails. He kept asking to ride the tough stuff, did well for a beginner.
Of course, he also has his eye on MY mountain bike now. He is riding my old bike, a good bike but not as flashy as the one I ride.
Funny how that works isn’t it?
For sure! My son seems to be getting the bug, but he is really trying to negotiate my bike away from me. My bike is not an option, especially since it’s dialed in for me and I would have to replace pedals, etc. just to let him try it. My old Trek is just fine.
It looks to me like you and Nate are really bonding together. I love it that he is the one initiating it. Don’t give him your bike, though. Some things are for dads only 🙂