Both partners should work to stay involved during the pregnancy and birth of children. Both should be involved as equally as possible with the new baby, whether they are same sex or heterosexual couples. In heterosexual couples, studies show that dad’s involvement matters greatly, and the secret to keeping dad involved with the baby is a good relationship with mom. If there is low conflict and continued sex, then dad will stay involved with the baby, and the couple is more likely to maintain marital happiness.