<human>: She does her best to be supportive. This is a change after years of her letting me do the heavy lifting in most areas. But I've been depressed over a year now and have only had some success getting out of it. She admitted being a big part of how I've struggled and she's trying. I'm getting better I can tell.

My problem now is that I am deeply insecure after she has spent most of that time building her own life separate from me. New friends, new drugs, tattoos, clothes and a new outlook. One that is better for me but now I can't match it or haven't been able to for a long time.

Sometimes little things get to me, like her changing everything up in the bedroom. I want to be supportive though. Other times it's her friends and how they can't stand me, only know me as that guy who shows up now and then but who'd they prefer went back to sitting in the dark. 

I've also come to find out that at least one man is chasing my wife and I can't compete, or I worry that I can't. She told me what was going on which is a change from the past. 

But the other night at a party I woke to see her with one of them deep in conversation on another couch. He was all over her several times and she handled the problem but I felt totally useless to do anything about it myself. I should have been able to.

Things like this, like all these changes and particular incidents make me feel like I'm so weak and useless that I've driven her away, or will. She says no but I know how she'd prefer another kind of man. I used to be that but I worry I can't be again.

How do I respond to all this? What do I need to change to get us back how we were? I feel like we only look past each other and I know how much I've let her down.

Can you give me a shortened version of the text?
<bot>: I've been depressed over the past year. I've gotten better but my wife's new life has left me feeling insecure and unable to respond. What can I do?