Update. He followed through after a week. He called me earlier and we started talking again. We spoke for 30 mins. At the end of the call, he told me he is still grieving and he doesn't want to much emotions at the moment because it will trigger his grief. He couldn't say I love you because he doesn't want anything that has something to do with emotions at the moment. However he said he cares a lot about me that's why he reconnected and called back. We spoke like how we usually speak with each other. Catching up telling me how his day was and his whereabouts. So it seems like we are in good terms and I got no reason to be anxious and worried.