A couple of quick suggestions on bonding with your Basenji.
First thing I would do if you are up to it is take him for a long walk. By long walk I mean a couple of miles. This is a wonderful time to bond because you have the alone time together, you are going new places with new smells, and migration is something that is natural. In a lot of ways walking as a pack be it you and the dog, or you, your boyfriend and the dog, you are forming a pack.
The second thing I would do is allow this dog some lap time. My basenjis really like their lap time and the special pets and attention that they get. I found once I let them take a nap in my lap they bonded with me pretty quickly.
Since this basenji has only been with your three days, if you have an old tshirt that you are willing to give up, wear it around the house for the day and then put it in his crate. What you are doing is getting him comfortable with your scent. This will also help you bond quickly.
Yes you can feed your Basenji from your hand, but I think you are better off finding a special treat. If he does not already know, teach him to sit and when he does treat him. If you repeat this a couple of time and treat him, he will also start to bond with you and appreciate the treat more. Dogs do love to please their owners. Basenji's might be independent, but they are still dogs.