This guy i’ve been seeing is acting different all of a sudden, i’m not sure if i should leave or wait it out.

i’m 24f and he’s 24m. We’ve been seeing each other for about 3 months now and we’ve seen each other almost every day. he told me he wanted to take it slow and i agreed but he’s acting quite the opposite. Almost needy. and i’m not gonna lie i kind of like it. i haven’t been in a relationship in a while and i don’t have any friends due to recently deciding to become sober and cutting out everyone in my life who would jeopardize that. We talk to each other all day every day. and about 4 days ago for what seemed to be no reason at all he didn’t call me text me and i didn’t see him. super out of the ordinary and i became very worried. i decided to drive past his house on the way home that night and he wasn’t home at 10pm. the next day he called me and said he’s just super depressed about not being able to see his daughter on thanksgiving. i don’t understand why he didn’t tell me that. we’ve had seemingly open communication this whole time. we got into an argument and resolved it and decided to hang out that night. he then told me he couldn’t bc he had made plans to go to the gym w his friend and that was apparently where he was the night before. then on thanksgiving everything was fine again and he came to visit me at work bc his holiday plans were for the weekend instead of the day of. we had completely made up and he asked me to come over after work. then and hour or 2 before i left work he got a call and said it was his friend that he goes to the gym with and he’s gonna go hang out w him. he left to see him and then texted me saying he was gonna go get drinks with his sister. i was extremely hurt and and felt really ignored and disrespected. i had told him that this is one of the hardest days of the year for me as well and i could use some support. he didn’t seem to care which isn’t like him. i just don’t understand why all of a sudden everything’s changed. his behavior hadn’t changed at all leading up to this it was just like a flip of a switch. i feel like maybe i should just leave before i get even more hurt or before this becomes a pattern but i also feel like maybe i should wait it out. i’m not sure what to do. i don’t think he’s seeing anyone else but i don’t understand why he’s being like this.