Hi all,
Apologies for rambling.
DH and I have been happily married for 6 years. DD1 is almost 4, DD2 is just 1. After DD1 came along, naturally things changed in the relationship to accommodate a LO. I felt we dealt with it well, DH feels he struggled to adjust. But we got over it and were very happy. DD2 was born last year, and then DH was taken away from us for months with work. We didn't see him from when DD2 was 20 weeks until well past her reaching 9 months.
We all missed him dearly, and I couldn't wait for him to get back. When he returned he had missed so much of the girls changing and growing that it took him quite a while to adjust, but slowly he became more his usual self and I thought he was adapting well.
Recently I've noticed he's not so loving towards me, snappy and grumpy. We haven't had sex in about 4-5 weeks and before that it was not frequent at all. I've tried to be more loving towards him in an attempt to encourage him, but he just clams up.
He wouldn't discuss it at all and whenever I asked him if there was anything wrong he just said he was tired.
It all came to a head 2 nights ago when he'd been snapping at me for ridiculously silly things and I told him he needed to sort his temper out. I left him in the bedroom and sat down stairs thinking things over. An hour later when I went upstairs, DD2 woke up as I was cleaning my teeth so I asked him to go in and settle her. Well that was it he just lost it completely. He got really annoyed at me and begrudgingly went and settled her.
This was the last straw and when he came back in the bedroom I was in floods of tears and told him that this was by far the most unhappy I'd ever been. I told him I didn't understand him and why he's being so horrible to me. He said we needed to talk.
He came home from work yesterday and we spent the whole evening talking. He says that he felt really odd when he came home from working away. That he loves me and still finds me attractive. He still wants to be in this marriage, but is struggling to remember how to be around me. He has no sex drive and doesn't understand it himself.
I asked him if he feels that he may be depressed but he said no. He's happy in himself and enjoys spending time with the girls. Enjoys his work. But it's appears to be me. I don't get it.
I'm not even sure I'm relieved he actually decided to talk to me. Now I know what he's been thinking I'm so upset. What the hell is happening to him?
I've asked him if he would go and have some sort of counselling. He said he would look into it. 
I'm so confused now.