Thinking like a child

A friend told me last night that I am still acting and thinking like a child. That I should change because it's not good for me. This made me think the whole afternoon. Do I need to change? And if I do, will I be happy with the result? 
I told him that I was lucky growing up with people spoiling me by giving me my needs to feel contentment. And now I still get this from every person that I meet. I don't demand them to do it. But they do it anyway. So, is it my fault that I am being pampered this way? 
He promised me that he would be with me all the way. That I could spend my remaining days, months, years with him. Is it wrong that I believe him? And if I am really thinking like a child, will it affect my relationship with him? 
I don't really have the answers to my questions as of now. What i know now is I am happy that I feel this way with someone special. That because of this I am willing to let fate do the job. I do agree that I am still thinking like a child. I am happy just the way I am.