Should i go back out with him or move on?

There's this guy and I went out with him for 2 months but we've been really on and off for the past year. We did "stuff" and then a week later treated me like ****. I got fed up and dumped him 3 weeks ago and then he goes and says he liked my best mate the whole time. Now he's saying he only said that coz he was peed with me and he really likes me. then i went away for a few days and came back to 20 tweet mentions saying "come back i'm missin you more than anything". I do kinda miss him but then again I don't care anymore and I want to move on. What shall i do? Ignore him and carry on or ask him back out?