Marriage is a force. Should be supportive with the childcare and bills for sure

Depends on the situation. They could be co-parents without getting married too

He has to be responsible for taking care of he kid, and be part of their life

What makes him think that the girl want to keep the child in the first place?

It depends on the girl. But the guy must be responsible with what he did

It depends on the situation. Getting married does not solve everything

Depend on the girl, but the guy should take responsibility of course

If they love each other and theres a mutual agreement between them.

doesnt need to. i think the couple can decide if they should or not

Complicated. It depends if the couple wants the kid or not.