I think you need to talk to her and tell her how you feel. Keeping it all from her will just makes things worse. She needs to understand that you both also need time for each other. And I can't believe you both are sleeping apart!

Yes, having the kid sleeping with the parents is normal practice in the Philippines. We were like that with my parents. BUT, my parents never slept apart, only when my grandma was having difficulties and needed someone to be with her when she was still alive (her house was just a couple of houses away from ours and my dad took care of her). Even up to now my parents are very affectionate with each other and never gets shy of showing it to us (hugs & kisses).