How to stop being so dependent on my bf?

Me and my boyfriend (both 17) have been dating for about 6 months. I love him so much and id say this is the best relationship ive ever been in.

I go to therapy for sexual and emotional trauma when i was younger, and during a session with my therapist i realized im honestly dependent on my bf. Codependency might not be the right word bc on his end, he might not be dependent like i am, but anytime a bad thing happens or something it just completely ruins my mood. Me and him have also mentioned before how i just love talking to him basically all the time and it’s definitely not a secure thing.

I honestly havent been a great girlfriend recently, ive been getting upset at small things, and its making me scared of him thinking im too much to handle and breaking up. So because of that, i honestly sometimes want to talk for longer or hangout longer because i want to know that hes not mad at me.

My past 2 boyfriends were absolutely evil to me, and they tried to the fact that they hated me until we broke up, and i dont think its happening this time but it is something that scares me. But also at the same time, i dont want to project because that happening to me isnt his fault. Its honestly because of that that i havent been the best gf because im just expecting my boyfriend to turn on me and become like them. And i dont want to be like that because he is great, but its basically the saying “people will take an inch and go a mile” when something happens that upsets me, and makes me worried ill get treated the same way i was.

Back to codependency though, i do try to push it down but its so hard to sometimes. Of course its fine if we go like a few hours (8ish) without talking or whatnot, but after that or if im anxious about an incident then i feel the need to instantly talk to him, and if i cant it makes me feel a lot worse.

Another thing is that might be adding onto it, he takes me seriously but he doesnt always..? Sometimes if i want to talk about something serious, he doesnt take it as seriously as i do, or doesnt say anything in response besides “chill”, which also kind of ‘triggers’ me to think about how it used to be in the past, as if he just doesnt take the relationship seriously or something. I know he does take us seriously, but its things like that that make me wonder.

I hate thinking like that bc i dont want to make it his issue that i wasnt treated the best before, by exes and other trauma, but i also dont really know how to act differently if he doesnt want to have a more serious conversation :(.