Young and No drive?

Okay Here goes, Im 22 and met my 30 year old husband a year ago in the military. We hit it off and got preg quick. ever since the baby my whole body changed and i have lost most of the weight but still feel very self conscious due to stretch marks and such. My husband and i fight about him not getting enough and him having to watch internet because he "has to" . I understand men are in need of this but we are now going to counseling ( marriage on the brink of divorce) and we had recently and i hated every min. of it. I feel ashamed that i am not more ual and he makes me feel SO bad for not wanting it. Plus he wants to live his internet life for real. Like he wants three somes and with other couples everyonce in a while. Im not into this kind of thing and i dont want to. i married him for a reason and i feel we should want to have with each other . not other people. Help me please i am so lost and i cant talk to him about this topic it just ends in a fight. Thank you for taking the time i really appreciate it.