<human>: Condense the text into a few key points

My wife left after issues with my depression/anxiety came to a head.  She's a school counselor and cares for others all day long.  She needs to take care of herself right now, and I respect that.  We've always been great as friends and neither of us wants to lose that.

The problem I have is, well, I'm wondering where to set boundaries.  Her living situation right now is pretty crappy, and her roommate is messy.  It's nice for her to come here to a clean home and cook some food to share and take back to her house.  I'm being as accommodating as I can, largely because I cherish any time we spend together and I would like to spend as much time with her while I can.

We also have a dog that I feel is as much hers as he is mine.  He was always a binding force and has helped me through this immensely.  I want her to have him as well, and every time he sees her, he lights up.  He's not a human child, but he needs her.  He needs me.  I need her.  She doesn't need me.

In the last week or so I've felt uncomfortable, even angry when she's here (anger is a very rare emotion for me).  I feel taken advantage of, as if she can have the best of both worlds - come here when she needs either some respite from her current home or connection to her past home.

She can come here, cook, hang out with our dog, leave, and go back to her life without me.  I, on the other hand, watch her come and go.  Sometimes, we hug goodbye.  Sometimes, we hug, but it feels forced.  I'm just really confused.  I want her in my life, but how?

This is my first time posting here, so if this would be better addressed somewhere else, let me know :)
<bot>: My wife left recently but still comes over because she likes our house better.  I want her around and sometimes it feels good but feel like I'm being used.