getting him back

How do I get my ex back? We broke up just over a year ago and have stayed friends. We are a little distant then we have been but we still talk and stuff. I know that I could message him and talk to him and we could be friends with benefits. (Not being cocky) we have just always had a little something between eachother. No matter how long apart we spend not talking. We always talk and it's like back when we were dating and flirt a lot. I guess you could say there's a lot of chemistry between us. My question is, how do I get my ex back as my boyfriend? 
I have never stopped loving him and he's said to me he still likes me and misses me (I haven't told him that I still have feelings for him)