Why is my boyfriend acting this way all of a sudden?

To begin, my boyfriend and I are in a long distance relationship. He has come to my country twice and during the last visit he met my family. We have known each other almost 4 years.

Just last week, I finally flew to his country and met his family. Everything was great. He was a complete gentleman too! I even met his friends!

We want to get married so we can be together. However, he wanted to get married before I left. However, he didn't propose. We told each other how much we loved one another and I said I didn't want to rush. Ultimately, I said no for now. I told him that I'm in love with him and he's the only person I want to marry and we should wait until we have more ducks in a row.

We ended things by passionately making love, looking at old family photos, staring a meal with his family. In the airport we kissed and embraced and he told me that I need to hurry back because he doesn't want to be without me anymore. That he is an orphan of my love.

Fast forward, I get home and got COVID. And I have been recouping and recovering. And in the beginning he was extremely worried and checking in on me here and there. However since me leaving, we have barely spoken few words to one another. It's been a week. I'm feeling the distance and I think he is too.

Our messages are short and vague and he responds after long hours. He only called me once via video on new years and that's it.

I know I might be a little dramatic considering I have nothing else to do. I don't know.

It's been a week and I don't know how much more I can take or how this will affect our relationship.

Why is he being like this? What is one to do?
Why is my boyfriend acting this way all of a sudden?
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