He waltz's back after a year, like nothings changed? Don't wanna make the wrong decision

ok so im gonna apologize before, for the essay ;). So like 3 years ago i met someone through friends, me and him kinda skipped the whole "just friends" thing and started seeing eachother. He is a really hypocritical person, and that kinda got in the way off things and we stopped speaking and seeing eachother all together for 3 months. We started randomly seeing eachother again and i screwed up, he screwed up the same thing happend.. and then it happened again lol. We start seeing eachother again, its all going good, (for once) we sleep together for the first time, he went home, i didnt hear from him for days - so i assumed he'd done one again and i ended up sleeping with someone else "/ then to make things even worse, his cousin (my mate) kissed me, i didnt even have enough time to react. Then the same day he rang me and we met up, i felt sooo guilty but obviously i didnt say anything to him. One of his mates found out and told him everythingg, including the guy i slept with, and booom that was it. No contact whatsoever for a year. Then one day last week he emailed me, day after i ran into him, next thing yaa know were back where we started. He is a really really good person, and hes probably one of the nicest guys ive met and i know he really really did like me and he still does. But i dunno, does it sound like its too late? i mean is likeing eachother enough? i just really dont wanna regret what ever decision i make. Or do i just tell him this is it? and how do i even do that :(? does it even sound like it could work? lool need advice badley "/

Hi Kaytee You don't mention your age, whatever it is this doesn't sound like an adult relationship, but more like a bad addiction that neither of you can quite give up. It depends what you want. If you are looking for a long term stable relationship this one sounds on the hopeless side to me. Good luck.