Heartbroken and needing help!

[irishblessings]

Tough couple of days. H almost seems manic - he has now gotten a couple of additional part-time jobs so that he works from 5pm-9:30pm and then from 10pm-6am (he is in education and has summers off)
So he moved out of the hotel of the week and is basically living out of his car. All the kids are in - they were worried - I was worried so I texted H and said: No reply needed. If you need a place to sleep after your shift there is an empty bed upstairs. No strings attached.
So we wake up this morning and he is asleep upstairs.
We go about our business - I am about ready to go swim with S when out H comes with his little shaving kit and gets in his trunk for his clothes. Out falls soft drinks, plastic cups, plates, etc. Basically he's living out of his car. He says until he gets through this phase and his finances improve he's going to be trying to live places for little to no rent. WTH????
I was so stunned - and hurt that this is preferable to living with me.
I finally told SIL that H had left and she felt horrible and said that she was going to call him and invite him to come stay with them.
I also contacted our counselors just for advice and they both indicated that H appears to be getting worse. Basically they had the same advice this board has - protect yourself and your kids.
I have actually done better with some GAL activities - gone out to dinner a couple of times, etc. H still sends random texts / letting me know where he is, what he's doing, etc.
All the kids are in this weekend and I am going to enjoy time with them. They want to meet with their dad without me. H asks why - and I tell him that I don't think they are comfortable asking all their questions in front of me. He says - well are we going to do something altogether? I answer that I will be open to whatever the kids want to do.
I have no idea what I am doing / my oldest D tells me to just take some breathing space - no self help books, etc. I am going to try to take that advice.