Smothering

So my boyfriend has been super stressed with his job and life and stuff and has been a little distant. (Note: we are long distance haha) So I've been trying to be there for him but I do admit I may be a little to lovee dovee at times. Yesterday he admitted to me that he feels a little smothered but says it okay. I don't feel as if it's okay. In my last serious relationship he smothered the shit out of me and now I'm unintentionally doing it to my current lover. How do you stop smothering?