trying to get over a stupid ass dude

Sooo this is going to be long but i need to vent. i've been single for as long as i can remember basically since birth other than week long middle school relationships. Anyways, i started talking to this guy that i met at a party months prior but we never got each others numbers. I found him on tinder and we matched, he realized he met me before and we started talking. We talked over text and snap for like a month and he always flaked when we tried to hangout. We finally hung out and he was soo sweet, he picked me up at my house and we went to a puppy place then dinner then his friends apartment for a party. i smoked something and got really out of it, almost like i wasnt in my body but he took really good care of me. And i felt bad for ruining his night. We kept talking obviously went on more dates came over to my house when my parents were on vaca and slept over. Twice. Umm he stopped talking to me for like 2 weeks and then i hit him up and he told me he was just going through things. So we picked back up where we left off. He came over met my dad and slept over my house with my parents home. They were cool with it. Then i went to his place when his parents were not home and he made me dinner and it was really nice. I tried to make plans to take him out, but he canceled last minute. I was honestly going to ask him to be my bf then and i was pissed when he canceled. We rescheduled, he flaked again. I told him i was mad at him and he told me  he was going to make it up to me all that stuff. We hadn't seen each other in two weeks and i was getting mad so i asked him what we were doing, he basically told me that he really liked me but he wasn't trying to rush into a relationship bc of his last one, I understood it and was like okay. Then one night i told him i didnt think i want to do it anymore and he told me that he really liked me, basically reassuring me he wanted to keep doing this. And then the next day he texted me in the morning saying he was sorry he fell asleep but never answered me when I replied. I bombarded his phone and i got no answer. I really like this guy, like despite his looks which arn't great but i've never felt this way about anyone. We follow each other on twitter and i found him tweet "its crazy after all these years you still have this effect on me" I messaged him basically laughing that he went back to his ex, and that i didnt feel so horrible about myself . He answered! And basically told me that he didnt know why i felt bad about myself and that he didn't think he did but he still had feelings for her, that he was still in love with her. I fought him like how could he not know he was in love with her and how could he drag another person into it and have sex with me multiple times if he was still in love with her. He told me before that his parents wanted to meet me and thought we were dating.