I dare to say that the issue maybe isn’t you being clingy but your relationship is not being right.

Usually people are anxious and insecure and needy in relationships because relationship isn’t going the right direction and a partner is not fully commited to you or just feeds you crumbs leaving you unsatisfied and not 100% secure.

So I am wondering if you should look into possibly real issue such as is this life long happily ever after relationship with this man being heads over hills crazy for you or not?

PC I saw in your other post that he wouldn’t talk to you sometimes a day or two. That’s ok if you just met a person but if you two are considering each other boyfriend and girlfriend why is he not feeling a need to at least briefly contact you daily? Perhaps this lack of interest on his part is what causing you feeling clingy. I’d sit him down and ask what he thinks of this relationship. Is it serious? Casual? Is he seeing others?