1.5 year and still need adviceee

okay . so ill try to keep this short and sweet . but ive been with this guy for a year and a half now . of course its rocky relationships all have their own problems but heres the thing. in the beginning, he treated me soooooo right . buying me flowers paying half the money for my tattoos posting me on his social media , and then around 7 months everything started going down hill. i still stuck around . we got into this one argument recently that made me really feel unappreciated ans unloved and i told myself it was his last straw. well he cut that straw real short by having a tinder notification pop up on his phone 3 in the morning and by flirting with another female on facebook messenger . well weve broke up and have been for maybe 2 weeks now (this is the longest we've parted) and just recently he sent my friend videos on instagram saying the fun and games we're over to return home with my dog . my sister texted me saying he was in my room so when i went home, he literally cleaned my entire room, left me $20 (the last time we spoke he knew i didnt get paid yet and was struggling a little), brought me my universal remote (so i can watch movies and not be bored all day like i was if i were home ) left me a nick of loud to smoke by myself and at the moment my gas is off , he left a heater in my room for me and my dog . he also left me some food and a 10 page index card letter saying how hes taking it day by day and how he hopes i dont push him completely out of my life . how he loves and misses King and I and really i just dont know what to think bec i know its the little things that matter the most and im actually starting to feel appreciated again . but i fear if i let him back in my life, itll be a repeating cycle and ill really be done with him . i see serious potential in him and have faith we could make it some day with a nice little family of our own . but im afraid if i accept him now (he isnt ready) then when he is ready, ill either be moved on or done with relationships period . someone please helllppp .

BTW , we come from 2 difffffferent families who treat us the same . terrible . which is why i think we always feel like we need eachother .