Do men pull away when they are stressed?

Hi guys! I just wonder about my situation with this guy (sorry for gramma mistake as I'm not native). We went on date for 8 months. Our relationship is good and even getting better and better. We seem happy every time we met. However, the guy told me that he has a headache. He went to see doctor and he found that he got a tension headache, which is quite severe. I have no idea what to do rather than try to cheer him up and try to deliver a good coffee to his workplace (he loves coffee, so I think drinking favorite beverage might help him to feel better)

However, last week, he started to pull away. He told me he has less feeling for me, but he is not sure if it is his real feeling or it is because he just stressed. He needs 'space'. So, I give him space. I try not to act needy or desperate although I actually feel. We are not talking ever since (now 1 week). He still watch my stories on instagram and sometimes react on it.

The question is men can pull away when they are stressed? I did a research. It say yes, but I still want to ask experience from you guys.

And what I should do? My plan is I do 'no contact rule' so it will help the guy figure out what he actually wants and it helps me to move on if he actually lost a feeling for me too. Thank you for your answer!
Do men pull away when they are stressed?
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