Nic - I don't want to sound too harsh. We are all here for the same reason which is to save ourselves and hopefully save our M.
Its just your H treats you like a doormat... comes in and wipes his feet about and moves on. NOT ONCE in the last few months have I read anything about him showing concern for YOUR feelings. Sure, he helps out with $, he takes your D out... those are his OBLIGATIONS.
Stop and think when did he last show any true concern for your emotional well being????