Sometime his depression makes me more depress ☹️☹️

You gotta be pretty emotionally stable to deal with someone else's mental issues. It's not easy.

I think that’s because you care about him and you get sad because he’s sad , I’m like that when someone feels ill I do straight after and I also seem to pick up on people’s energy too When they are depressed or sad or mad mainly when I’m close to that person or we are in the same house. I do always offer to talk to people about it and listen , I don’t want anyone to deal with it alone. I can understand though that there’s times when it does get too much to listen to , like I had a friend who I had to talk out of suicide everyday that was so hard and made me depressed because I felt like a bad friend for not being able to help.

I know what you mean

Moods effect .....:)

I often put on a happy face and act enthusiastic just so she doesn't feel bad.

Yes. I pick up on people's feelings very easily.