Clinginess/love addiction?

I really don’t think this is sexually related, as the issue is more of an attention and security thing rather than physical...
to start, I’m an only child of a single mom who has PTSD... I never met my father, and I never cared but I don’t know if that could have anything to do with it. It seems like my mom and I both have anxious attachment though.
I’ve always been really clingy when I’m in a relationship, and my current boyfriend who I believe has PTSD is also very clingy, and I think that’s the only reason he’s put up with me so long. We’ve been together for just over 2 and a half years now.

it’s like I don’t even realize it until after the fact but I get really scared or worried/anxious (mainly if I’m alone/at night when I’m trying to sleep) if I haven’t been able see him or talk to him... sometimes it’s because I’m worried he’ll leave me or something, but a lot of times it’s like I can’t escape the stress of everything else (work, family, etc.) and I feel like I just need him to comfort me so I can clear my mind and get some sleep... sometimes the more time we spent together , the more time I feel like I need to spend with him though.
it’s not an every day thing usually, but for the most part it feels like it builds up little by little until I’m at my breaking point. I’ll go 2 or 3 days completely fine and then I start feeling more anxious. Then I end up practically harassing him, or having a panic attack/crying, or going off on him for not caring about me and bringing up completely irrelevant things that happened years ago.
I got used to us being together or talking all the time. When we couldn’t be together he would stay on the phone with me until I fell asleep most of the time, and when we stopped doing that idk how many times I ended up getting nightmares and kept waking up and panicking and I’d end up frantically calling or texting him...
I think I was putting a lot of stress on him, along with him already having anxiety, so recently we’ve been working on our relationship and I’m trying to give him more space, but I’m scared I’m going to end up ruining our relationship. I started to get really clingy again at one point and he ended up being the one comforting me again, but I ended up saying something like “I wonder if it’s possible to get withdrawal symptoms from loving someone?” (Kind of joking), but I thought about it, and another thing I had heard before about the chemical in your brain from “love” being similar to heroin, so I looked it up and saw this article about love addiction, and how people with it are basically looking for love and security that they should have gotten from their parents, but they end up looking for it in romantic relationships. Could this be what’s wrong with me?

Hello,

I think you should read about codependency.
I am no professional, but some things you say sound familiar.

Have a look... could enlighten you on some things