Broke. I made the mistake of being friendly like a neighbour and Sandi set me straight. If your S is in an A you can treat them like a neighbour. But like the neighbour you wish didn't live beside you. You are polite if they catch you in the back yard. Other than that you find an excuse to go inside and you tend to avoid bumping into them.
I'm having a similar issue now with W texting and being friendly. I don't respond unless necessary. When you do the dynamics do change a little and you can't get sucked back when they play nice. I almost did the other day because she asked how I was for the first time in months. And said sorry when she made a mistake. Also the first in months. I had to stop myself from reacting to the little things and niceness from her. Remember to take your time and think things through. If it remains difficult come here.
Don't let yourself be just a friend unless it is what YOU want. Not so you can still be connected with H. You are better than that broke.
The person that you will spend the most time with in your life is yourself, so make yourself as interesting as possible.