Guy I used to love doesn't talk much anymore after I got a boyfriend?

I used to have a strong friendship with a guy so much so that we began to always confide on each other. Unknowingly, he had a partner at that time but his partner was abusive. He began to confide in me more everytime they fight. I ended up falling in love with him but when I confessed, he tells me he only sees me as a friend. So, I began to slowly move on. I still have feelings but I began talking to other people. During that process, I met the person who became my boyfriend. My guy friend was still communicative even if we posted our photos together of my boyfriend now but when I visited my guy friend in the hospital with my boyfriend, after that, he became nonresponsive or replies only for a few words. It's been months so I know this is quite unusual and he just said he is undergoing something personal. I'm just concerned with how our friendship is not really as active as before. I may have been at fault as well because I respond so late sometimes.

Guy I used to love doesn't talk much anymore after I got a boyfriend?
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