1) Friendships exist because in a perfect world, that one person that you love and is your companion would be all you need. But this is not a perfect world. Other people help our minds grow. Different people have different prespectives on life. If you're a man, having friends that are men gives you a group of people who understands what being a man is. And same for women, having women friends get being a woman.

Humans are pack animals. We're like wolves, however, wolves are much much better at being a pack than humans because we cause our own drama. But humans are programed to require other people not just to talk to but also we need touch. For example, if a baby is fed and cleaned and clothed, given regular check-ups and kept physically healthy it will still die. Why? Because baby's need love. They need to be cuddled and hugged and kissed. They need to be played with and talked to. Babies need love or they die. The same is true of adults. Loneliness over time has physical effects and can wear your body down just like disease.

So, in a relationship you need your spouse/girlfriend/boyfriend. But you need friends, too. Where do you think the idea of family comes from?

And it's hard to make friends. Also some people put their friends in front of their spouse, this is the wrong thing, too.

2) When someone loves you, but not in that way, it means they care about you as a person and think of you like a family member. They don't want anything bad to happen to you, and like having you in their life. However, they don't want to have a romantic relationship with you or a physical relationship with you.

3) This is complex. People choose for different reasons. Some for love. Some for money. Some for shallow reasons like looks or lifestyle. The best reason to marry someone is because you love them romantically, consider them your best friend, have the same values, and are on the same page about important things like finances/having kids/etc.

4) If a woman is forcing you to do anything you don't want to, then she's not the right person for you. There are women who don't want kids. There are women who love to travel. You have to find someone who holds the same values as you. The best thing is to be honest and up front about these things. Don't marry out of desperation. LIke I said, marry someone that you not only love romantically but also consider your best friend.

It isn't easy to find someone like that. But the alternative is an unhappy marriage and then divorce.