THANK YOU ALL!!

I do have an L that I consulted with a while back when H told me he wanted to sell house. I met to go over my legal rights. I like L very much...I have talked to him 3 or 4 times on the phone and he has yet to ask me for $$...His first question every time I talk to him is "How are you emotionally?" I think that is really kind.
H does not know I looked at his acct!! He opened his own and used our address...I kind of stumbled over it by accident. So I called the automated phone line and have done so daily...today the 3k check cleared...H just wrote it b/c he gave me a check on Sunday and the 3k check number is the one after.
I am sick over the fact he can do this w/o even a conversation...I don't feel marriage should be this disposible...I am sure his OW (who is 23...UGH...he is 40) is occupying every thought he has right now.
Not sure if I should make an attempt to talk to him...would much rather p/u papers myself.
I am his second M and I can't believe that he would be so callous as to throw our M away without even trying to work at it!! If you read my previous posts you will see this hit me out of no where...I have two young daughters and two stepsons who I love deeply and have raised them since they were young!! How can H just throw me away w/o even thinking about what we have been through and how great I was to his boys?? I married him with my eyes wide open...I chose to get involved and he has a pretty scary XW....I am not bad mouthing him to anyone...I figure if I do nothing and say nothing he can't blame me for causing problems....I am taking the high road.
I just feel so hurt and used...not sure if I should talk to him or not!! H has been friendlier this week....maybe b/c he did this and is laughing that I don't know. H told me he would tell me when he filed....should I wait for him to tell me or ask him?? I do think we also need to talk about R/M... how can you end it w/o a conversation?? We are not in highschool...this is a family!!!
To talk or not to talk?????? advice??????