Me [24 F] with my ___ [25 M] 6 months, Exclusive but not serious?

I met this guy 6 months ago We hit it off well, but said he didnt expect to be around very long. We have more in common then anyone we know (same videogames music athletic interests cooking). After a month of seeing eachother knowing i was dating other people he mentioned he wasnt seeing anyone else and i asked if he wanted me to stop seeing others, he did. Few months past i felt like i was putting in most the effort, taking care of him and his sick cat (held him crying for days), cooking him food, surprising him got nothing back.

So i said i was catching feelings for him, his response is he didnt want anything serious but enjoyed gaming with me... So i said i wanted to start going on dates again to distract me, when i did, he said i was losing interest in him and he would fight for my attention back to be exclusive with him...

• we talk every day -we spend days together -we've never fought - when were together we have eachothers full attention -we keep up with each other and sex is great so naturally being exclusive and no real toxic issues of course i have fallen for him but i dont want to be used, i can not tell if hes just using me for the (girlfriend experince) without the girlfriend title, when i say things like girls just wanna be loved he pulled me close and held me till i fell asleep, we game together nearly everyday were not together in person and we have a ton of fun together. his only cons is i think he just doesnt know what he wants at all, he has a degree but doesnt presue any job in that degree or motivated to work it seems. he used to not flirt with me but after i said i wanted to see other people he got much better at that now can be very cute, anytime i say i dont like something he works hard to change that like not being cuddly and giving awkward hugs, hes changed both. What should i do, keep going as things as prob keep feeling mix of love and rejection?

Am i overthinking things and 6 months is still not long enough (i should mention i am new to dating, im 24 hes 25 but i got out of 6 year relationship so i a learning difference and stuff) is this normal dating, should i be concerned, idk what i am doing looking for some insight into dating world, what is not serious but exclusive and is that even a thing because we pretty much act like boyfriend and girlfriend and he doesnt wanna lose me.... im sooooo confused tl;dr: Is exclusive serious, if not how do you handle exclusive but not serious?