Thank you everyone for responding to my previous post which I asked for advice to help my daughter who was feeling lonely.
Since then, one of my other daughter's friends, who goes to the same college, messaged her and said that:
He loves our family because we are more of a family than his and care about him more. My husband and I are so chill and (my son) is a 'legend'.
My daughters shared this with me but the thing which affected them both the most (in a positive way) was, and I quote, "You are like siblings to me." Honestly, we nearly cried.
I never knew he felt this way about our family but we are so grateful that we are a safe place and that he feels comfortable, especially since we never know what someone is going through. He has requested that they all watch a film together when he comes over later.
I just thought I'd share this as some positive news. Honestly, I can't even explain how sweet his messages were.