I wonder, Is it ok to care for someone who is 20 years younger than you?

yes caring for poeple is always good!! if you're talking about a possible love/marriage type caring then you should do the same thing with all those questions. Pray, Pray, pray and then Pray some more. Talk with lots of mature Christians including your pastor but mostly pray!!

To care for another and them to care back is a gift. You must do what you think is right. Your feelings can be a compass and then you reason it out. Many of these relationships have worked and many have not. Just like many of the same age relationship. However you will have some issues unique due to the relationship you are considering. Be very clear about the situation and enjoy it for however long it lasts. I hope you are one of the lucky ones. Good luck.

That's ok. Age is nothing but a number. Caring is actually a gift you could offer to a person.

I think its upto the person who he or she cares about regardless of age! Obviously it matters when it is breaking the law but just caring about someone should be upto that person and be nobody elses business.